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TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM KV32XBR45 convergence is way off in the horizontal direction CURE Unit has an open R789 a 18 meg 1/2 watt resistor for the Horizontal static convergence. The tech will have to make a resistor out of 3, 6.2 meg resistors. Suggest tech look for R789 and see if it is open It is on the on "C" board. It The value is around 10 meg. There are two different chassis and CRTs used for this model. If they have the older chassis type that requires H stat convergence (CRT board has H stat control) they need to order the older CRT as per the manual. If newer type (No H stat) then the new CRT as per Service Manual supplement -1 is needed. CRT 8-733-743-05 The H Stat is done using the Yoke ring magnets. I have attached the two Service Manual supplements, and the SB325R1. Suggest tech look for R789 and see if it is open It is on the on "C" board. It The value is around 10 meg. There are two different chassis and CRTs used for this model. If they have the older chassis type that requires H stat convergence (CRT board has H stat control) I have attached the two Service Manual supplements, and the SB325R1. However none of them have show this resistor. We were able to install a resistor in this unit that was a two 10 megs in series. Trimming the value by adding another 10 meg in parallel with one of the other 10 megs. we were able to converge the set. Original part was not available. Sony
KV32XBR45
AA-1
CONVERGENCE
KV32XBR45
AA-1
KV32XBR45 Unit has convergence of all vertical lines are displace horizontally. Tech replaced the CONVERGENCE CRT without authorization. This did not solve the symptom
Sony
KV32XBR45
AA-1
KV32XBR45 Unit has sever Horizontal static convergence error. TV cae to us from another CONVERGENCE shop where the CRT and flyback was replaced. Customer call us for secont opinion.
Sony
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE R789 open H-state not operational. What I'm finding is a resistor that appears to be open on this "C" board It is R789 The value cannot be read nor is it listed in the ESI software Unit has mis-convergence of red and blue vertical parts list. Trying another value from 10 to 20 megohms. This CONVERGENCE lines. They are displace horizontally. Tech resistor is in the ground return of the H-stat resistor that is replaced the CRT without correcting the symptom. installed in the CRT. Tech needs to try different values to try and make this set converge horizontally. This TV converged with a 10 megohm resistor. Suggest tech look for R789 and see if it is open It is on the on "C" board. The value is around 10 meg. There are two different chassis and CRTs used for this model. If they have Unit has nis-convergence of red & blue vertical the older chassis type that requires H stat convergence (CRT CONVERGENCE lines which are displaced horizontally. Tech board has H stat control) they need to order the older CRT as replaced the CRT. This did not solve the problem. per the manual. If newer type (No H stat) then the new CRT as per Service Manual supplement -1 is needed. CRT 8733-743-05 The H Stat is done using the Yoke ring magnets. Tech needs to check the condition or RY602. RY602 is the switching relay that turn on and off the set. The relay is Unit was dead. has shorted horizontal output and "HOT" switched. In other words one side of the relay is shorted Q601, & Q602 components in power connected to power oscillator output that runs nearly 350 supply replaced. After replacement unit will turn on vac Peak to Peak at 90Khz. Once the relay is closed this dead but still has no secondary voltage output of power energy is placed across the power output transformer and provides the drive necessary to produce the B+.Measuring transformer. All relays click but no high voltage. Has sound. the input voltage of the relay to "HOT' ground found it to be 150 volts DC mode. But on the other side of relay we has 3 volts DC mode. Unit has defective RY602 relay. When monitoring the E/W Pin output of the M board the Unit is trying to constantly adjust the vertical height GEOMETRY signal was very instable. It was decided to replace IC351 the and horizontal size intermittently. Jungle IC. This corrected the trouble.
Sony
KV32XBR45
AA-1
Sony
KV32XBR45
AA-1
Sony
KV32TS46
AA-1
SONY
KV32XBR45
AA-1
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM Sony AA-1 chassis. Unit no high voltage or sound. RY602 latched at turn on. Tech replaced the flyback and Q601, Q602, VDR601, VDR602, VDR603 & R607. After theses components were replaced the unit still did not produce secondary B+. Only 3 volts on the collector of the Horizontal output. CURE
KV32TW77
AA-1
No high voltage
Inspected the Power oscillator and discovered that it was running and producing 167 volts DC at the input side of RY602, but a <13 volts on the low side. Jumping RY602 restored High voltage. Unit had a bad RY602 relay in the power supply. Tech may have a IK failure. When bringing up the G2 the raster will appear with full vertical sweep and a purple screen. Not much green. Tech needs to look at the IK buffer collectors on Q771, Q772, & Q773. Normally with beam current there shall be about 1 volt on each collector. With the CRT Socket removed all collectors must drop to "0" volts. Q771 did not. It was 1.2 volts regardless if the tube was connected or not. Tech needs to short Q771(E&B) and see if the collector will drop. It did not. TV will need a replacement Q771. Replacement cured the symptom. Unit appears to have a normal IK feed back to the jungle IC. Screen voltages are 670 vdc and the cathode is running at 180 vdc. Unit looks like a defective Jungle IC. Replacing the Jungle IC corected the symptom. The design of the 8mm format is significantly different from that of the VHS. The 8MM format does not have any stationary heads and completely relies on the signals from the rotary video heads on drum. 4 ATF (Auto Tracking Fix) carriers are recorded on to the tape. Apparently the shielding in the 8 mm VCR, this close proximity to the TV, and the lack of shielding in the Sony TV caused the corruption of the 4 ATF signals. Placing the VCR on the bottom shelf of the TV cabinet corrected the symptom.
Sony
KV32XBR37
AA-1
NO RASTER
KV32XBR37 serial 80139945. Unit has no raster. Has sound, CRT filaments, and high voltage. Led in front is flashing
Sony
Sony
KV32XBR85
AA-1
NO RASTER
KV32XBR85 Unit has no raster. Has sound and weak OSD. Stand-by light is not flashing.
KV32XBR250
AA-1
Noise Video
Sony KV32XBR50 This customer has a Goldstar 8mm/VHS dual deck VCR located under this television on the built in shelf. When customer uses the 8mm deck the playback of the tape has corrupted audio, and poor tracking performance when played back on this television
Sony
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE Tech needs to look into the Data & Clock lines of the chassis. These lines must be 5 volts peak to peak and have a typical KV36FV15 Unit will turn on with the front panel word length of 1000 milli seconds. Tech discovered the SDA control but the set will not develop raster or sound. pulses were 3.3 volts peak to peak whereas the CLK pulses The high voltage will turn but no raster. After 3 were at 5 volts. Tech had to isolate each load on the SDA minutes the raster and sound will appear line and found the PIP tuner was responsible for loading down the DATA line. KV32TW67 serial 70040800 Remote does not function RMY102 remote is being used. The menu displays when in the "menu" button on the remote is pressed. We are able to highlight each area of the menus selection which are the "Video, Timer, Setup, and closed caption" choices. But when selection of any of these are tried nothing happens. In the service mode Service menu the service menus comes up with AFC as the first selection. However the binary number (1000) displayed under the word "Service" keeps changing from 1000 to 1100) randomly Unit will shut down each time the Remote headphones circuit is turned on.
Sony
KV36FV15
AA-1
RASTER
KV32TW67
AA-1
remote
The remote has been changed without effecting the symptom.. This appears to be a system control failure. All ID codes are within normal values. Suggest the tech replace the following components IC101 and IC102 are 8-752-856-00 and 8-759-280-74. The components correct the symptom.
Sony
KV32XBR35
AA-1
shut down
KV32V16
AA-1
shutdown
KV32XBR45
AA-1
WEAK VIDEO
Unit has an intermittent short to ground on the IR12 volt line located at the output of IC202(3-4) located on the "A" board. This short was caused by a solder splace on that circuit . When HV comes up the signal at the Collector of the KV32V16 serial 7089163 Unit will not stay on. horizontal output transistor is normal. No shorts can be found Goes into shut down immediately after turn on in the power supply. PM501(1-810-061-21) & IC601(1-810477-11). PM501 was to culprit in this case. Sony KV32XBR45 Unit has a very faint picture But There is video at the base of Q401 but not at the emitter. the OSD is fine. Problem shows up in the tuner Q401 measures 9 volts on all elements. Base must be 4.5 and video input mode. Tech ordered Q401 but did volts. Transistor is in cut off. Bases and emitter are the same not correct the symptom 9 volts. Unit has open R617 a 680 ohm resistor.
Sony
Sony
Sony
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE The hum is a result of magnetic flux from the vertical deflection yoke. The 60 hz is radiating into the low level audio circuits through inductive pick up from lead dress and ground loops. To minimize these Remove JW086 and JW1007.Add 22AWG wire from JW270 to ground side of R477. This wire should be on the top side of the A-board and routed to following the audio signal lines from IC1401 (audio Our tech plugged in the set and found the set did have a spark as soon as the set was plugged in the AC outlet. This is perfectly normal because this chassis has to fully charge 2 820 mfd electrolytics in a voltage doubler configuration. This causes a tremendous amount of in rush current that may draw several amperes until the filters are charges up. This will cause a contact arc the moment the set is connected to the AC line. This set poses no more fire hazard than any other electrical device that plugs into the AC outlet. We also performed an A.C leakage test on the chassis and found that it was less than .015 volts measured at the customers ground connection and neutral. Tech noticed the +15 volt source was lower than expected. It was only 10 volts. It is not unusual. The voltage is normally 12 volts. What the tech was missing is the -15. This voltage must be there in order for the set to have any vertical sweep. D530 was shorted and open R536 the 0.47 ohm current
KV32S40
AA-2
A.C Hum
KV32S40 serial 9028282 that has a low level audio hum in the video input or tuner mode. Looked in the FPR on web site but could fine nothing on the subject. The hum is at 60 Hertz
Sony
KV27V10
AA-2
KV27V10 serial 7104657. When the CATV rep was out a few days ago he plugged in the set in to wall and when the prongs made contact with the AC leakage claim AC wall outlet a small spark was seen. The CATV rep exclaimed, "The television is a fire hazard, and you need to call for service!" He left the set unplugged and we went out on this day.
Sony
KV32V25
AA-2
arcing
So Sony ny
KV32V26 KV35V76 KV35XBR48
AA-2 AA-2 AA-2
arcing ARCING ARCING
KV32V25 serial 7036251. Unit has an arcing inside the flyback transformer. Tech replaced the transformer now the unit has a bright band at the top of the screen. The tech replaced the jungle "IC without effecting the symptom KV32V26 serial 8019814. Arcing in the neck off Tech will need replacement CRT A80JYV51X CRT KV35V75 CRT is arcing in the neck KV35XBR48 serial 9014229. TUBE ARCING IN THE NECK The CRT is bad. unit will need CRT A89LJT80XZ
Sony
Sony
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE Audio level adjustments will not increase in a linear A new microprocessor is available for this unit. It is part fashion, instead the audio will increase rapidly in number T-998-600-32. It replaces the original IC001 which the first 1/3 of the bar graph. was M37273MF-251 Tech needs to add a resistor in parallel with R432 to KV27S45 serial 8046950 Unit has a very rapid effectively reduce the value of R432. This changes the change in volume when increasing the level from voltage divider ratio to the volume control circuit and makes minimum to 4 notches above minimum the volume circuit more linear in operation. I had the tech try to measure if there was any DC voltages that resided on the Variable audio output connectors. There was "4.5" volts on the Right channel and "0" volts on the left channel. When the "Mute" transistors on the variable line triggered they pulled both lines to ground. When the external amp was connected to this circuit the input capacitor for the KV32S65. Serial # 8014575. Sound and picture is right channel charged with this 4.5 volts. We still had audio fine but when the fixed or variable audio out is on this line even though it was at a 4.5 vdc potential. But connected to an external audio amp and the set is when the Sony muted, the input capacitor inside the Big muted a loud pop is heard in the right channel. External amp discharged and caused a tremendous pop. C172 is a .47mfd used to decoupling the audio from IC101 the Variable audio control IC. This capacitor had 4.5 vdc on each leg measured to ground. Removing the capacitor and measuring the DC resistance across the cap measured 175 ohms. Replacement of the capacitor corrected the symptom. Problem is best heard in the video input mode with no signal Sony KV27S20. Unit has a low pitch whine in the put to the input. It can be seen with an oscilloscope on one of left audio channel. the output pins of IC1401 but not on the input. Part number is 8-759-369-39. IC1401 corrected the trouble. All SAP, Stereo, and mono functions come from the Tuner assembly and nowhere else. If a problem exists for the Sony KV27S36. Unit has choppy SAP audio. S.A.P. feature all circuitry relating to the feature is replaced Stereo 0.K. when the tuner assembly is replaced. Recommend the Tuner/IF/MTS decoder assembly. Replacement corrected the Sony
KV27V65
AA-2
AUDIO
Sony
KV27S45
AA-2
AUDIO
Sony
KV32S65
AA-2
audio
Sony
KV27S20
AA-2
Audio
Sony
KV27S36
AA-2
audio
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE Sony KV27V65 Sound does not ramp up correctly. Seems to get very loud as soon as the volume gets higher in a very short time KV35XBR35. Unit has color temperature error in B&W Tracking the YUV input mode only KV27S22 serial # 8102548. Unit goes to a bright BRIGHT RASTER blue screen with retrace lines then shuts down. audio I had tech get into the ID codes and reset ID2 from 239 to 175 and ID 4 from 130 to 194. Then initialize the EPROM . Set returned to normal operation According to Sony tech support there is no adjustment for this input. Refer this customer to Sony customer affairs. Unit has a defective CRT. When unit is able to turn back on again the set will sometimes be in the video input mode. This symptom acts like it is a problem with the satellite receiver. Inside the satellite receiver there is a NTSC KV35S26 Unit has the tint phase shift and color encoder which injects the 3.579547 MHz color oscillator lock up problems only on the Hughs satellite signal in the video. If this oscillator is too far off frequency it receiver. VCR and over air signals have solid color will not phase lock with the 3.579545 MHz in the television. lock up. This is a software problem with the Satalite receiver. A software download will be available to all receivers in Late Suggest the tech look very close to the connection s to IC351(4) This the Chroma AFDC filter. Components R354, C355, C355 are in the AFCFIL circuit. It is possible the KV35S36. Unit has random chroma phase trouble is a Jungle IC but Before replacing it is shifting. The tint will vary radically. NTSC color recommended to check the aforementioned components bars are not stable. "Barber Polling" effect of first. Note: when checking the components it was found that colors on bars. C366 has glue touching each end of the device. The glue effectively changed the value of the device. Cleaning the glue and reinstalling the device corrected the problem. Sony Sony Sony
KV27V65 KV35XBR35 KV27S22
AA-2 AA-2 AA-2
Sony
KV35S26
AA-2
CHROMA
Sony
KV35S26
AA-2
chroma
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE The customer is using two different RF sources. Cable TV and a satellite dish. The CATV is being feed into the RF input labeled VHF/UHF and the satellite is fed into the AUX input. It appears the tuner does not correct the AFT when two different RF sources are used. The channel will has to be readdressed again for any AFT correction to occur. Suggest the customer used the satellite in the S-video and separate video input mode. In his present configuration the customer is loosing all stereo reception, and all high frequency detail over. This corrected the symptom. When operating a different DVD player the symptom is the same. There is no cure to this phenomin from Sony at this time Tech needs to order IC001= T-935-001-61 per bulletin R329R1. After replacement the tech will need to enter the tech menu and select "CRIW" and change it from 15 to 3. Also check the "LBLK" must be 7, "RBLK" must be 7 and "HBSWO" must be 0. At this point save the new data and The tech needs to set the ID codes to the following ID0=25, ID1=19, ID2=47, ID3=0, ID4=27, ID5=3, ID6=0, ID7=0. If these are OK then the tech will need to replace the IC001 with an upgraded version per bulletin 329R1 Original generic # is CXP85640-004S, the new generic # is CXP856P40S-1 part number T-935-001-61 See Bulletin 329R Original CPU CXP85640-005S The new device is CXP85640-006S Original CPU CXP85640-005S The new device is CXP85640006S CPU was replaced and did not correct the symptom.
KV35XBR20 0
AA-2
CHROMA
KV36XBR200 When the customer is using the RF input labeled VHF/UHF the set will picture will lose chroma intermittently. But when using the AUX input the chroma is solid and does not vary. The tech replaced the RF switch without effecting the symptom.
Sony
KV35XBR48
AA-2
CHROMA
KV27S20
AA-2
CLOSED CAPTION
Unit is connected in to component video input mode through a DVD player. The picture has a predominately green picture KV27S20 serial # 7042141 Unit will not operate in the closed caption mode if using the DVD player. However if the television operates in the tuner mode for over the air telecasts, closed caption works fine.
Sony
Sony
Sony
KV27V20
AA-2
CLOSED CAPTION
KV27V20 8015729 No closed caption on premium channels
Sony Sony
KV27V20 KV35V75
AA-2 AA-2
CLOSED CAPTION CLOSED CAPTION
KV27V20 serial 8015729 Unit does not have closed caption on premium channels KV35V75 9006691 Unit does not have closed caption on premium channels
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE The tech needs to set the ID codes to the following ID0=25, ID1=19, ID2=47, ID3=0, ID4=27, ID5=3, ID6=0, ID7=0. If CLOSED these are OK then the tech will need to replace the IC001 No closed caption on premium channels CAPTION with an upgraded version per bulletin 329R1 Original generic # is CXP85640-004S, the new generic # is CXP856P40S-1 part number T-935-001-61 Unable to see any problem with circuitry, and ID codes are Sony KV27V20.unit has intermittent symptom of CLOSED correct. All appears normal. Setting all CC1 ~ CC4 and closed caption coming up on screen. Cust claims teletext 1 and 2 to the "Minus" option this effectively shuts off CAPTION they cannot turn off the closed caption option. the closes caption feature. Instruct customer to operation od Resistor R354 was not soldered in correctly. The resistor is in Sony KV32V15 serial 9013716 AA-2D Unit has the Color AFC circuitry. It had a .15 ms ripple on it causing a horizontal banding of purple and red at top of phase shift in the chroma in the first 4 to 5 inches on the screen. If the color was reduced the banding would picture. Problem was caused by a glue used to secure the color banding disappear. Color bar did not have a normal surface mounted resistor. The glue prevented a good appearance connection of the resistor to the pad. Cleaning the glue away and resoldering corrected the symptom. Unit has over 6 permaloy magnetic on the CRT bell in the KV27V22 serial # 8051260 will not converge the area of the bottom of the yoke. This is not a good sign. It is CONVERGENCE also a rebuilt CRT. We are not going to place more bottom red green or blue horizontal lines Permaloy strips on this CRT. It needs replacement.
Sony
KV27V20
AA-2
Sony
KV27V20
AA-2
Sony
KV32V15
AA-2
Sony
KV27V22
AA-2
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE I never recommend that after replacing these components in the power supply that the set have full line voltage applied to it. The odds are very high the new components will be instantly. Suggested the tech use a variac to do these tests. This power supply should start running at 10 vac as a line KV32S40 serial 8001469. Unit had the power source. The current should never go above 100 ma during a supply IC601 shorted and open R607. Tech no load test. Max 800 ma during a normal load. When replaced these components and it shorted out running this power supply at 15 volts the current was surging again at the instant the television is plugged in. to over 200 MA. Checking al the loads on the secondary found no obvious short circuits. However when checking the capacitors in the primary we found C610 has internal resistance of 470K, There should be no internal resistance. Replaced C610 and restored normal operation. Suggest that C609, C610, C611, and C612 be automatically replaced This product was brought into the shop where the set was operated with the CRT disconnected for approximately 100 KV32S40 Unit will run for several days then it will hours continuously. It ran fine. But 6 hours after the CRT was short the horizontal output transistor and destroy connected the Horizontal output and power supply self the power supply IC601 destructed again. Unit has defective CRT Suggest the tech replace the CRT KV32V40 Unit was originally dead. Q502 was After replacement of the components the sweep was still replaced. Now set has a sever over scan of excessive. When using an oscilloscope on the IC351(31) the horizontal sweep. Collector of Q512 only 2 volts E/W pin out we found 6 volts DC, and no 60 HZ parabolic Q512 was shorted. L511 is burned and needs to be wave form. If this E/W output pint was touched to ground through a 270 ohm resistor the picture narrowed up to a an changed, along with D504 D503, D502, C511, C513, and L511. almost normal width. Product had defective IC351.
Sony
KV32S40
AA-2
dead
Sony
KV32S40
AA-2
dead
Sony
KV32V40
AA-2
dead
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE Checking the Collector of the Horizontal output transistor the retrace period was running in excess of 20 microseconds not the traditional 11.5 microseconds. Closed inspection was found the deflection yoke leads inside the connector were loose and the crimp for the wire to the horizontal winding were not making contact to the terminal inside the connector. Cleaning the terminal and prepping the connection was necessary because there was evidence they were burned by the voltage drop in the poor connection . After running the television for over 1 hour with the CRT disconnected It was determined the power supply, deflection, and horizontal deflection were all working. It was further decided to change the CRT needs to be replaced. CRT fixed the unit.
KV32XBR48
AA-2
dead
KV32XBR48. Originally dead with shorted IC601 converter IC and horizontal output transistor shorted too. The horizontal drive looked odd, but this was not the problem.
Sony
KV35S26
AA-2
dead
KV35S36 serial 9027801 Unit goes dead after 10 minutes after the power supply was repaired.Q601 & Q602 were not running hot they just shorted. They were replace 4 times. Each time the transistors lasted 10 minutes and in 1 case 1 week.
Sony
KV36FV1
AA-2
DEAD
The set was completely dead. VDR602 was noticeably burned up. Cutting this device our of the circuit found that it was open. However the device is connected in the circuit like a metal oxide varistor. It should measure open since it is in parallel with the A.C. Line. It was discovered that no other KV36FV1 serial 9029271. Unit is dead. After shorted components could be found in the primer of the talking to customer they explained that they had a power supply. Main line fuse WAS NOT BLOWN! Checking power surge caused by a car hitting a power pole. the raw AC voltage on the AC Line filters T601, and T602 find that we have no AC voltage on the output of T602 but present on the input side. Isolating the open coil and removing the defective VDR602 allows the set to turn on and operate correctly. Tech will need to replace T602 and
Sony
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE Checking the Collector of the Horizontal output transistor the retrace period was running in excess of 20 microseconds not Originally dead with shorted IC601 converter IC the traditional 11.5 microseconds. Closer inspection found and horizontal output transistor shorted too. the deflection yoke leads inside the connector were loose and the crimp for the wire to the horizontal winding were not making contact to the terminal inside the connector. Unit had a blown IC601 and R607. Tech had failed to check the condition of the Power supply output for the 135 vdc source.. It was discovered there was a 1.2 ohm short to Unit is Dead Tech replaced the IC601 and R607 ground caused by a shorted protect diode in the secondary of and the Flyback, but when power was reapplied the the power supply. I cannot stress enough the tech needs to set destroyed the power supply again. check all loads on the secondary of the power supply for shorts, and use a variac to start up all power supplies. All parts changed earlier are destroyed and need to be replaced The set was completely dead. VDR602 was noticeably burned up. Cutting this device our of the circuit found that it was open. However the device is connected in the circuit like a metal oxide varistor. It should measure open since it is in parallel with the A.C. Line. It was discovered that no other Unit is dead. After talking to customer they shorted components could be found in the primer of the explained that they had a power surge caused by a power supply. Main line fuse WAS NOT BLOWN! Checking car hitting a power pole. the raw AC voltage on the AC Line filters T601, and T602 find that we have no AC voltage on the output of T602 but present on the input side. Isolating the open coil and removing the defective VDR602 allows the set to turn on and operate correctly. Tech will need to replace T602 and
Sony
KV32XBR48
AA-2
Dead
Sony
KV27V65
AA-2
Dead
Sony
KV36FV1
AA-2
Dead
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE This is caused by the 10 megabit throughput limit of the DSS video compression format MPEG3. In order for the compression to work correctly the Digitization process only updates the data that is changing. Background data is not updated as regularly as the foreground data. Hence when everything must get updated. But the MAX Data throughput is finite. the entire video waveform will not be accurately represented, instead the smaller detailed portions of the picture will begin to have larger pixels so not to exceed the Max Data. This is why to the eye the set appears to loose resolution or picture detail. This is normal. The set has a dynamic focus error. Tech needs to see if the Dynamic focus circuitry is running correctly. Also before any hardware is tested the parameters of HAMP and DCSF should be adjusted to see if the dynamic focus is effected. When adjusting these parameters the values get the best focus when each is mixed out to 60. The focus becomes poor 2 inches from the left side of the screen and 5 inches from the right side of the screen.
KV36FV1
AA-2
FOCUS
KV36FV1 Customer is running the television on a DSS satellite system. Customer claims the set looses focus in the picture when there is a lot of detailed movement.
Sony
Sony
KV36FV1
AA-2
focus
KV36FV1 serial 9046442 Unit has poor focus on left and right side of picture
KV27S10
AA-2
GEOMETRY
KV27V65
AA-2
GEOMETRY
KV27S10 serial 723009 Unit has symptom every time the set looses power the geometry memory is lost VPOS, VSIZ, HSIZ. PAMP drop at least 10 points each. When resetting these values and writing them to memory the they will be erased as soon as power is removed KV27V65 serial 8027393 Customer complaint is a slight geometry error or tilt in the lower right hand corner of the screen. It causes a symptom of horizontal lines that are not perfectly straight. In this case the lines are elevated by at width of 2 horizontal lines.
Sony
Tech needs to replace the EPROM....... I002 corrected the problem
This television is operating within specifications. The geometry errors should not deviate more than 1/8 of an inch across the length of the Horizontal line. Horizontal tilt can be no more than 1/8 of an inch. This television beats this measurements. There is nothing I can recommend to the tech to do to improve on the geometry of this receiver.
Sony
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE
KV32S45
AA-2
GEOMETRY
KV32S45 serial 8102913 picture is rotated Tech needs to break the bonding of the yoke ant reposition clockwise by 1/4 inch. Tech claims this tube does the yoke. not have a pix tilt circuit or rotation on the CRT bell KV36FV1 serial 9032273 Tech needs yoke modification for the yoke upgrade. Gave tech bulletin 387R2 relating to the shoulder roll off
Son y
Sony
KV36FV1
AA-2
GEOMETRY
KV27S25
AA-2
KV35V36
AA-2
KV36FV1
AA-2
KV32S40
AA-2
There does not seem to be any horizontal drive to the Horizontal drive transistor. Defeating the Horizontal output by removing the collector connection still will not allow Unit has no high voltage. LED in front is flashing HIGH VOLTAGE Horizontal drive to appear at IC351(37). This pin is sitting at on and off after power up. nearly 8.5 volts, not the 3 volts it is supposed to be. Also IC351(38) the HOFF/AFCPIN is at 3.3 volts which is normal. Unit has a bad IC351 CXA2025AS When going into the tech set up parameters and adjusting the HSIZ value the sweep will change to full sweep. Monitoring the voltage at the Collector of @Q512 the voltage Unit has a insufficient horizontal sweep. The will vary from 27 volts HSIZ set to 22. When HSIZ is set to horizontal sweep is reduced by 10 to 15% on the left side and 48 Q512(C) will drop to 16 volts. The set will have full sweep 2 ~ 5% on the right. but it has a slight foldover condition on the right side of picture. It is recommended the tech replace the retrace capacitors C511, & C513 and the Yokes" capacitors C518, & Unit has a severe over scan condition for Tech needs to check on L511, Q512, C513, C511, D502 & horizontal horizontal sweep. Tech did not measure any D504. One or more of these are shorted. voltages in the pin amp circuit. Measuring the collector of Q512 tech finds the voltage running in excess of -7 volts. The voltage on this transistor in Unit has severe over scan of horizontal sweep. inconsistent with the symptom on the screen of a narrow horizontal Tech replaced Q512 Shorted and Q511 open all raster that is hourglass shaped. L511 and Q512 are burning elements. up. Suggest the tech replace the following additional components D502, D503, D504, C511, and C513.
Sony
Sony
Sony
SONY
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE Sony
KV27S20
AA-2
horizontal lines
Sony KV27S20. Black banding across the screen. Gave tech modification on the KV27S20 to replace C1267 Symptom does not appear when playing a tape. from a .047 to a .47 tantalum capacitor.
KV32S40
AA-2
KV35V35
AA-2
KV36FV1 KV35V75
AA-2 AA-2
Measuring the collector of Q512 tech finds the voltage running in excess of -7 volts. The voltage on this transistor in KV32S40 ser 8053998 Unit has sever over scan of inconsistent with the symptom on the screen of a narrow horizontal sweep horizontal sweep. Tech replaced Q512 Shorted raster that is hourglass shaped. L511 and Q512 are burning and Q511 open all elements. up. Suggest the tech replace the following additional components D502, D503, D504, C511, and C513. When going into the tech set up parameters and adjusting the HSIZ value the sweep will change to full sweep. Monitoring the voltage at the Collector of @Q512 the voltage KV35V36 Product has a insufficient horizontal will vary from 27 volts HSIZ set to 22. When HSIZ is set to HORIZONTAL sweep. The sweep is reduced by 10 to 15% on the 48 Q512(C) will drop to 16 volts. The set will have full sweep SWEEP left side and 2 ~ 5% on the right. but it has a slight foldover condition on the right side of picture. It is recommended the tech replace the retrace capacitors C511, & C513 and the Yokes" capacitors C518, & C515. Tech replaced all of the capacitors and the symptom KV36FV1 serial 9023663 Unit has a sever over HORIZONTAL Tech needs to check on L511, Q512, C513, C511, D502 & scan condition for horizontal sweep. Tech did not SWEEP D504. One or more of these are shorted. measure any voltages in the pin amp circuit HORIZONTAL Unit has shorted L511 and Q512. Tech replaced Tech needs to replace D503,D502, D504 and C511, C512 SWEEP these items and they burn out again the retrace capacitor along wit the other components.
Sony Sony
Sony
Sony
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE I had tech short the CN1761(1, 2, 3, & 6) together. This should give a perfect black and white picture. But when this was shorted we had a black and white picture but the picture still was flashing. Since the jungle IC was already replaced it was assumed the IK pulses were OK from the jungle chip. The main concern is if the pulses are leaving the main board, and if the pulses are getting back to pin 27. This flashing condition indicates the IK feedback pulses are insufficient some where in this path. Further static check indicated a shorted zener diode D1792 in the IK buffer path on the CRT I instructed the tech to enter the tech mode and set the ID codes...ID0=25, ID1=23, ID2=47, ID3=0, ID4=27,ID5=135, ID6=1, ID7=0 . Write these in memory, then press "8" "Enter" to initialize. This corrected the problem.
KV32S26
AA-2
Int Raster
KV32S26 Unit has a brighter than normal picture. When G2 is lowered the picture blinks on an off. Tech replaced the flyback and jungle chip with no changes in symptom
Sony
KV27V22
AA-2
KV27V25 Unit has intermittent snow in the picture zThe tuner pn# 8-598-340-20 was replaced. Now the set has a symptom where the remote control causes the set to enter the video input mode when intermittent snow the channel is selected. Also the set will enter the video input mode if the and another brand of remote that operates a stereo receiver will put the set into the video input mode. NO AUDIO
Sony
KV36FV75
AA-2
KV27S15
AA-2
NO CHROMA
ID codes are 0=25, 1=55, 2=47 3= 0 , 4= 155, 5 =143, 6 =6, KV36FV75. Unit has no audio. But also has no 7=0 which is correct. Initializing the EEPOM did not correct OSD stating "Main" or "Stereo" Main picture is fine. the trouble. Tech will be returning with a Manual Scoping the first place where the chroma signal can be readily available is on the PIP module. They are marked "C KV27S15 Unit has no Chroma. Black & white is OK. Also no Chorma while using the PIP. Sound IN" & "C OUT" on connector CN501(1 & 5). We have chroma and On Screen Display OK. Initializing EPROM going into the PIP board but nothing coming out. Jumping does not change the effect. these pins together with a 1 mfd capacitor caused the color to return, as long as the capacitor was in place. Unit has bad Sony KV32XBR48. No chroma in PIP X3304 0n PX board not soldered (PIP)
Son y
Sony
Sony
KV32XBR48
AA-2
no chroma PIP
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE KV27S25 serial 811908. Unit has no High voltage. LED in front is flashing on and off after power up. There does not seem to be any horizontal drive to the Horizontal drive transistor. Defeating the Horizontal output by removing the collector Looks like the tech has a bad IC351 CXA2025AS. A second connection still will not allow Horizontal drive to Jungle IC corrected the problem. appear at IC351(37). This pin is sitting at nearly 8.5 volts, not the 3 volts it is supposed to be. Also IC351(38) the HOFF/AFCPIN is at 3.3 volts which is normal When monitoring the Horizontal output collector we found the 140 dropped slightly at turn on. But the Horizontal driver KV32S25 Unit will not develop high voltage. When Q501(C) dropped to 85 and back up to 140. I had the tech to the set is turned on no high voltage appears. The remove the horizontal output transistor and try starting up the set has sound and has a flashing light on the front set again. After power up measure the Q501(C) horizontal indicating the set is still in a stand by mode driver transistor. It should be about 85 volts and stayed. This waiting for IK pulse feed back acknowledgement told us we were looking at a shutdown symptom. Checking from the jungle IC all secondaries we found nothing shorted. Replaced flyback which corrected trouble. The horizontal driver has tremendous amount of ringing on it. Does not change if we remove horizontal output transistor. The transistor has drive has 7 distinct pulses on the base that go above and below the cut off point of the transistor. KV32V25 serial # 7014651. Unit has no high These seven pulses are 1 microsecond in duration and are voltage. grouped in clusters after where the horizontal drive pulses are supposed to be. If allowed to operate for more than a minute the horizontal driver transistor Q502 will short C to E. The product has a bad jungle IC301
SONY
KV27S25
AA-2
NO HIGH VOLTAGE
Sony
KV32S25
AA-2
No Highvoltage
Sony
KV32V25
AA-2
No Highvoltage
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE I had tech check the must haves. The only thing that was not present was Heater voltage. I had the tech remove the socket and measure the total resistance of the filament KV26V36 Unit has no raster. Further checking we source by measuring the H1 & H2 terminal pins on the "C" found the set had High voltage and vertical sweep. board. It was open. H1 & H2 at the flyback were less than 1 Just no filaments. ohm. Checking CN503 found the black wire was loose and fell out of the connector when unplugged from the main board. Connector wire would stay in place if reseated. Pushing connector back in place corrected the trouble. KV27S20. Unit has no raster. Tech had replaced Open trace on the CRT driver board causing the IK pulses CRT but the symptom was not corrected Power not to be returned to CN1761(6) not to be fed back into the light still flashing indicating the unit is in the stand jungle chip. by mode KV32S25 Has no Raster. When the G2 is increased the set has a partial raster but brighter at The symptom indicates the set has a vertical deflection the top of the screen then the bottom. Measuring failure but more precisely a power supply failure for the _15 across the vertical yoke windings we find there is a volts source. The tech either has a open R536 = .47 ohm @ voltage of approximately 8 volts. These is sound or open D530. . and channels can be selected. I had tech measure the G2 voltage at the CRT. It was only KV32S65 serial 8014809. Unit has no Raster. 54 volts. With the socket disconnected the G2 voltage Sound O.K.. LED on front panel flashing. It also returns to 410 volts. Unit has defective CRT. CRT must be does have high voltage. replaced A80JYV52X
Sony
KV26V36
AA-2
NO RASTER
Sony
KV27S20
AA-2
No Raster
Sony
KV32S25
AA-2
NO RASTER
Sony
KV32S65
AA-2
No raster
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE Cure: Checking the +12 and -12 volts at IC561(2&4) respectively are normal. Monitoring Q561( C) it was only 1.7 volts (where it should be about 3 volts), and Q561(B) was 0.6 KV32V40 Unit has no raster. When G2 is volts( where it should be "0" volts).. The voltage at Q562(B) increased the unit has a non uniform bright screen, is always low (0.11volts). By pulling the base Q562(B) high, NO RASTER brighter at the top of the screen. The television with a DMM in the diode check mode, we are able to get full has sound. vertical sweep. It appears there is no, or poor pulse coupling between the FB pulse U561(3) and Q562(B). A strong pulse is present at U561(3) when grounding Q561(B). No pulse at C564(+) Tech needs to replace C564 1mfd @ 50 volts was Unit did not have any Horizontal blanker pulse to pin 19 of Sony KV20VM20 Unit has no raster but sound and the Jungle IC. Shorted Z1403 Unit had 60 Peak to Peak at No Raster OSD are O.K. the "FP" of flyback. At cathode of Z1403 should be 7 volts peak to peak. Replace diode and restored normal operation. This symptom is inductive of a problem in the data or clock bus. Measuring the SCL & SDA I found the SCL was running KV32 Unit has a horizontal line across center of at 1 volt peak to peak and the SDA was at 4.97 volts PP. I the screen. The line is elevated above center by 2 no raster no sound had the tech start pulling all of the stand up boards out of the inches. There is no sound too. No LED'S in front mother board to isolate the SDA & SCL lines. After the main are blinking tuner was removed the SCL returned to normal. Replacing the main tuner corrected the trouble. When tracing the video signal from the front input connector we find good video on the connector but less than an inch KV32V25 Unit has no video when using the front away from the connector is a coupling capacitor C2233. no video input jacks. All other inputs are O.K. Apparently the trace was torn after the video input jack entered the board. Placing a hard jumper wire from the Jack to the C2233(-) corrected the fault.
Sony
KV32V40
AA-2
Sony
KV20VM20
AA-2
Sony
KV32S22
AA-2
Sony
KV32V25
AA-2
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE Checking the video at the input of the comb filter IC3504(2) on the rear I/O circuit board. The video is perfect. However the Luminance out IC3504(9)is broken into pseudo square This television had sever noise resembling black & waves that are random in size and shapes. This indicated the white random lines of varying lengths. No Combfilter was not working. Further checking discovered the discernable picture. Noise is in the tuner and video FSC IC3504(37), which is a 3.58mhz carrier was reduced to and modes. a 60hx pulses. At CN271(15) we found the FSC signal normal. Problem was an open trace between the connector CN274(15) and C3578 located inside the combfilter shield located at coordinates C2 on the UY board. Sony KV27S22. Serial 8126359 the sound is This symptom is called 'acoustical vibration." It is caused by increased to a 60 to 80% level the CRT will exhibit the sound energy from the speakers coupling acoustically an effect on the sides resembling a "water fall" through the CRT frame to the Aperture grille inside the CRT. effect. It disappears if the audio is muted or if the The vibration causes the aperture grille assembly in the tube audio level is dropped down to a lower level. to vibrate. Suggested customer use external speakers KV32XBR60 Unit has narrow picture and hourglass Q505 shorted and R571 open distortion I asked the tech go through the ID codes for this unit and see if they were the correct value. ID3was 10 ID5 was143 & KV35V36 Unit has no control over PIP channels. ID6was 0. These were wrong. The ID codes are supposed to The PIP only displays the main channel. It will not be from ID0 ~ ID7 = 25, 55, 47, 10, 155, 6, 0. After resetting change on its own the ID codes the set operated the PIP correctly but still needed to set the PIP chroma phase
Sony
KV36FS12
AA-2
NoiseY video
Sony
KV27S22
AA-2
Picture interference
Sony
KV32XBR50
AA-2
PINCUSHION
Sony
KV35V36
AA-2
PIP
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE This noise is normal due to the fact the set does not shut off the Main B+ from the main SMPS. What is turned off is the 9 volt source from IC642 in the "G" board. As the voltage decays the there may be a slight phase shift in the horizontal drive signal as soon as the 9 volts begins to drop. The reason the customer could not hear this symptom in a store is due to its acoustics. The store is far noisier and carpeted walls and floors. In the customers home the set sits in an enclosed oak cabinet (no doors) in a bedroom with tile floors. One can here a pin drop in this room. This set is operating This phenomena is normal and is caused by the IK pulses that are produced at the instant of turn on. Even thought the KV35S40 Unit has preglow at the instant the cathodes are not completely warmed up there will be a slight television is turned on. ?The preglow shows in the amount of beam current produced by just the IK pulses. lower left and right hand corner and stays until the Since these pulses are at the top portion of the tube or on the raster appears. curved funnel portion of the CRT this symptom is common and is not considered a defect in the CRT. KV27S22 serial 8091271. After the unit is turned I don't know what the latch time is for the Degauser relay. I on and the picture is on there is evidence the thought that it was a bit excessive. But even though the latch degausser is still running for about 5 seconds after time is excessive the posistor THP601 should increase high the picture comes on. There seems to be a 18 enough in resistance to drop the degaussed current to second delay before the Degaussing relay minimum levels. The trouble was corrected by replacing the unlatches. There is only a 10 second delay for the THP601 picture to appear after power up. The "Q" distance has been severely compromised because KV27S45 Serial 8056889 Unit has sever purity the aperture grill has shifted. Unit will need a replacement error in the lower right hand corner of the picture CRT KV36FV15 serial # 9026985 Unit has in the lower No magnets appear to have moved into a position that would left corner the tube has a sever convergence and this effect. It cannot be adjusted out. It has been determined purity error. the CRT needs replacement.
KV32S40
AA-2
KV32S40 8096389 Customer complaint is when the set is turned off there is a slight noise " zip" noise from the flyback transformer that lasts for about 2/10 of a second. The customer exchanged Power supply chirp the first Sony for this trouble. But the symptom was also in this TV too. The customer tried two of the same models, and claimed they did not here this noise when they heard it at the store.
Sony
Sony
KV35S40
AA-2
preglow
Sony
KV27S22
AA-2
PURITY
Sony Sony
KV27S45 KV36V15
AA-2 AA-2
purity PURITY
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM KV27V22 Serial # 8049735 Unit has red screen with then no raster G2 voltage drops to 3 volts. Tapping on neck of tube causes the picture to return to normal. Tech could not duplicate the trouble again. After this the set ran fine. CURE
Sony
KV27V22
AA-2
RASTER
CRT.. Due to this symptom and the intermittent nature of the trouble I suggest that we replace the CRT A68KZJ50X
KV32S20
AA-2
raster
KV32V25
AA-2
raster
KV27S22
AA-2
retrace
When raising the G2 voltage it was discovered the CRT had When turned on the raster has a dim glow, with the a uniform brightness where the top of the screen was brighter top brighter than the bottom. The Timer LED in than the rest in the CRT. It was also discovered the -15 was front flashes. Unit has high voltage and sound. missing. Tech needs to look at D530 and R537 a 0.47 ohm resistor. Tech noticed the +15 volt source was lower than expected. It Unit had an arcing inside the flyback transformer. was only 10 volts. It is not unusual. The voltage is normally The tech replaced the transformer now the unit has 12 volts. What the tech missed is the -15. This voltage must a bright band at the top of the screen. The tech be there in order for the set to have any vertical sweep. replaced the jungle IC without affecting the Resistor for the -15 volt source from the Flyback was open. symptom D530 and R537 a 0.47 ohm resistor. Unit goes to a bright blue screen with retrace lines Unit has a defective CRT. When unit is able to turn back on then shuts down. again the set will sometimes be in the video input mode. Unit has bright screen with retrace lines then it will shut down. Measuring the G2 supply finds nearly It appears the CRT is loading down the cathode voltages. 420 vdc but the CRT cathodes are running only 55 Unit will need a replacement CRT. volts. Disconnecting the CRT socket causes the cathode source voltage to rise over 180 volts. Measuring the 200 volt B+ at the CRT socket we found the voltage to be under 126 vdc. This indicated the 200 volt Unit has bright screen with retrace lines then shuts source was not running. I had the tech check R553 a .47 ohm down. 1/2 watt resistor and it was open. Replaced the resistor and the set operated normally
Sony
Sony
Sony
Sony
KV32S22
AA-2
retrace
Sony
KV32V25
AA-2
retrace
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM Unit has bright screen with retrace lines. The flyback was changed but did not correct the symptom. KV32S22 serial # Unit has bright screen with retrace lines then it will shut down. CURE Unit has the 200 vdc cathode source voltage measures 179 vdc but when measuring on the cathode directly the voltage is very low 22 vdc. Disconnecting the socket causes the voltage to rise back to 198 vdc. Unit has a defective CRT. Disconnecting the CRT and measuring the RK, BK,& GK on the CRT socket we found all of them running at 187 vdc. But after connecting the socket again to the CRT they immediately dropped to 33 volts. Unit will need a Tech will need to replace the CRT. 8-733-741-05
Sony
KV32S26
AA-2
retrace
Sony
KV32S22
AA-2
retrace lines
KV32S22
AA-2
KV32S22 serial 8011789. Unit has intense blue RETRACE LINES raster with retrace lines then shuts down. Tapping on neck of tube aggravates the symptom
Sony
KV32S22
AA-2
KV32S26
AA-2
KV32S26
AA-2
KV32V25
AA-2
KV27S25
AA-2
Monitoring the "C" board Blue cathode terminal the tech found the voltage was less than 70 volts when connected to KV32S22 serial 8046606 Blue screen with retrace RETRACE LINES the CRT. Removing the module from the CRT the voltage lines then shuts down. raises the voltage to 189 vdc at KB. CRT... Unit will need a replacement CRT When the set shuts down. All Cathodes of the CRT are only KV32S26 Unit will go to as bright screen with 66 volts. With the CRT disconnected from the module the RETRACE LINES retrace lines then shut down. RK, BK,& GK will increase to 202 vdc. . Unit will need a replacement CRT Unit has the 200 vdc cathode source voltage measures 179 vdc but when measuring on the cathode directly the voltage retrace lines KV32S26. Unit has bright screen with retrace lines is very low 22 vdc. Disconnecting the socket causes the voltage to rise back to 198 vdc. Unit has a defective CRT. Measuring the 200 volt B+ at the CRT socket we found the voltage to be under 126 vdc. This indicated the 200 volt KV32V25 serial 7019547. Unit has bright screen retrace lines source was not running. I had the tech check R553 a .47 ohm with retrace lines then shuts down. 1/2 watt resistor and it was open. Replaced the resistor and the set operated normally I had tech measure the 200vdc supply line and it measured Sony KV27S25 Bright screen with retrace then unit retrace lines only 78 volts. Unit had defective capacitor in the 200 vdc shuts down source.
Sony
Sony
Sony
Sony
Sony
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE Sony
KV27V40
AA-2
retrace lines
Sony KV27V20 has retrace lines no video. Unit will Missing 200 volt source from flyback to CRT driver board. shut down if left on after the filaments warm up. Trace broken at CN1781 After checking out the box and moving the box it was discovered the movement of the box effected the screen brightness. The box was mounted directly beneath the television. If the box was moved to the far left the symptom disappeared. If centered below the TV the symptom was evident. Solution was to move the CATV box away from the television and remove any electromagnetic interference caused by the television. When monitoring the Horizontal output collector we found the 140 dropped slightly at turn on. But the Horizontal driver Q501(C) dropped to 85 and back up to 140. I had the tech to remove the horizontal output transistor and try starting up the set again. After power up measure the Q501(C) horizontal driver transistor. It should be about 85 volts and stayed. This told us we were looking at a shutdown symptom. Checking all secondaries we found nothing shorted. Replaced flyback which corrected trouble. This could be caused by the CRT. Suggest the tech disconnect the CRT socket an run the set with the tube disconnected and see if the set shuts down with the CRT disconnected. With the tube disconnected the chassis ran 3 days without shutting down. A CRT was substituted and the problem never showed up on the other CRT. Replaced the CRT and it corrected the symptom.
KV32S40
AA-2
shading
KV32S40 Brightness shading in brighter on the right side than it is on the left side of the screen. Symptom only shows up in the tuner mode. VCR in video input mode is fine. Unit has CATV box "Scientific Atlantic model 8580338".
Sony
KV32S25
AA-2
shut down
KV32S25 Unit will not develop high voltage. When the set is turned on no high voltage appears. The set has sound and has a flashing light on the front indicating the set is still in a stand by mode waiting for IK pulse feed back acknowledgement from the jungle IC
Sony
KV32S65
AA-2
shut down
KV32S65 intermittently the set will turn off. This process takes about 30 ~ 60 minutes. The set can be turned back on again if the power button is pressed twice. Sometimes the set comes on in the Video 1 input mode when it was in the tuner mode before it shut down.
Sony
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM KV35V36 serial 9024090 Unit has an intermittent shut down that only occurs after two or three days. When shut down occurs, the LED in front is Blinking and raster disappears but sound is OK. When flexing, heating, or freezing the main circuit board the problem can never be recreated. KV24FV10 Unit will shut down immediately after turn on. But the unit will stay on if the service mode is entered.. KV32S22 serial # 8055057. Unit will run fine for 15 ~ 30 minutes with sporadic arcing then it will shut down with a bright green flash KV32S40 Unit will turn on and immediately shut down. It does get high voltage briefly. Appears to be entering over current shutdown. Waveform at the collector of the horizontal output appears normal. Horizontal drive is normal if the horizontal output transistor is removed. CURE Tech needs to order the CRT. Since we are not able to confirm any trouble with chassis The CRT is nearly out of Warranty. It is recommended that since we are unable to determine any chassis fault the problem must be due to CRT arc over. Note after 4 weeks of normal operation the CRT seems to have corrected the symptom. When monitoring the VP at IC001(18) only 1 volt peak to peak was measured. Floating IC001(18) allowed the voltage to return to 5 volt PP. Replacing the IC001 corrected the Unit needs replacement CRT 8-733-741-05.
Sony
KV35V36
AA-2
Shut down
Sony
KV24FV10
AA-2
shutdown
Sony
KV32S22
AA-2
shutdown
KV32S40
AA-2
shutdown
KV32S65
AA-2
shutdown
KV35V35
AA-2
SHUTDOWN
KV32XBR48
AA-2
shuts down
Severing the 135 B+ line and placing a 40 watt bulb in series with the supply were are still getting the same symptom but the Light illuminates brightly. We began to disconnect the flyback loads D530, D531. After disconnecting these we found the set will run with D530 disconnected . Checking this device it passes the static check. This component is the -15 volt source. It was suggested to replace D530. This corrected KV32S65 Unit goes into shut down. Will allow HV Open coil that supplied the B+ to the audio controller and to com up but goes into immediate shut down buffer chips. This loss in voltage caused the audio processor afterwards. At no time did we ever have Data on 9 chip to load down the Data and Clock lines and cause this symptom. & 10 of the Jungle IC KV35V35 serial 9011978 Unit flashes bright green with retrace lines then shuts down. When powered ?Unit has a defective CRT. A89LJT80X back up sometimes the set will be in the "VIDEO 1" mode. KV32XBR48 Unit get a bright red screen then Tech needs to tap on neck of CRT and see if the symptom is looses horizontal sweep then shuts down. Unit can aggravated by this action. After tech got to the house an be turned on again right away tapped on CRT it was founf that the Tube was causing the
Sony
Sony
Sony
Sony
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM KV27V22 serial 8004933 Unit has a green screen with slight retrace lines, Tapping on the neck of the tube aggravates the green drive then the set shuts off. KV35S40Unit is making a noise internal to the television that resembles the sound a fax machine makes when listening to it over a telephone connections CURE
Sony
KV27V22
AA-2
SHUTSDOWN
CRT.. Due to this trouble I suggest that we replace the CRT A68KZJ50X
KV27S40
AA-2
squeal
KV27FV15
AA-2
SYSTEM CONTROL
KV27V22
AA-2
SYSTEM CONTROL
KV27V25
AA-2
system control
These sounds are apparently caused by loose laminations in the Linearity transformer. It is suggested the tech replace L511=1-406-607-41, C520= 1-101-821-00(.002 mfd @ 500 vdc) R506 =1-215-861-00(47 ohm@ 1 watt Metal film) Checking Key-in to the I001 we found it to be sitting at 3.7 volts without any keys pushed. This is an analogue input to KV27F15 The set has a symptom of the keyboard the CPU and must be at 5 volts with no keys pushed. doing the wrong functions. Cannot get into the tech Keyboard had small board contamination on the channel menu. When the display button is pushed the set down switch. Removing the channel down switch corrected will shut off. the problem. All remote control functions return to normal and so did the keyboard functions KV27V25 Unit has intermittent snow in the picture zThe tuner pn# 8-598-340-20 was replaced. Now I instructed the tech to enter the tech mode and set the ID codes...ID0=25, ID1=23, ID2=47, ID3=0, ID4=27,ID5=135, the set has a symptom where the remote control causes the set to enter the video input mode when ID6=1, ID7=0 . Write these in memory, then press "8" "Enter" the channel is selected. Also the set will enter the to initialize. This corrected the problem. video input mode if the and another brand of remote that operates a stereo receiver will put the set into the video input mode. Unit has intermittent snow in the picture. 8-598I instructed the tech to enter the tech mode and set the ID 340-20 tuner was replaced. Now the set has a codes...ID0=25, ID1=23, ID2=47, ID3=0, ID4=27,ID5=135, symptom where the remote control causes the set ID6=1, ID7=0 . Write these in memory, then press "8" "Enter" to enter the video input mode when the channel is to initialize. selected. Also the set will enter the video input mode if another brand of remote that operates a stereo receiver is used.
Sony
Sony
Sony
Sony
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE After first turning on the set the cathodes of the CRT are measured with an oscilloscope. An interesting fact that after Unit will turn on but not have any raster until the the set is turned on there are no visible IK pulses on any of channel is selected. The LED in front flashes the CRT cathodes. IK pulses only appear when the channel indefinitely until the channel is selected. After a is addressed with the remote or the Channel up down channel is selected the set will run fine the rest of command on the television. Initialization of the EEPROM did the day. The unit has high voltage, filaments, & not correct the symptom. No incorrect values found in the vertical sweep during the no raster condition. alignment parameters. Only by elimination was the trouble found to be in the EEPROM. The IR blaster is used to communicate from the television to the CATV box in order for downloading to occur. If the IR blaster is not used the feature will remain inoperable because KV35V68 Serial 9005526 TV guide plus does not when the set downloads the data, it must find the host function. When the television is setup for TV guide channel. It uses the IR blaster to change channels on the Plus the customer is selecting that they have a CATV box in order to find the host channel. In order for this VCR and CATV box. But they are not using the to operate the customer must use the IR Blaster. If not they Calble Mouse or IR Blaster. will need to split the cable before it gets to the CATV box and deselect any VCR or CATV box questions by answering "N0" to questions about them in the initial setup menu. The IR blaster is used to communicate from the television to the CATV box in order for downloading to occur. If the IR blaster is not used the feature will remain inoperable because TV guide plus does not function. When the when the set downloads the data, it must find the host television is setup for TV guide Plus the customer channel. It uses the IR blaster to change channels on the is selecting that they have a VCR and CATV box. CATV box in order to find the host channel. In order for this But they are not using the Cable Mouse or IR to operate the customer must use the IR Blaster. If not they Blaster. will need to split the cable before it gets to the CATV box and deselect any VCR or CATV box questions by answering "N0" to questions about them in the initial setup menu.
Sony
KV36FS10
AA-2
System control
Sony
KV35V68
AA-2
TV Guide Plus
Sony
KV35V68
AA-2
TV Guide Plus
TSS Logs for Sony Television Products
BRAND MODEL Chassis KEYWORD SYMPTOM CURE When raising the G2 voltage it was discovered the CRT had a uniform brightness where the top of the screen was brighter than the rest in the CRT. Measuring across the vertical yoke windings we found a8.5 volts. It should be "0" volts if the vertical output is working. It was also discovered the -15 was missing. Tech needs to look at D530 and R537 a 0.47 ohm resistor. Unit had bad diode, resistor and vertical output
KV32S20
AA-2
This product has a strange glow toward the top of uneven brightness the tube. Sort of an out of focus raster but only at the top 1/5 of the tube.
Sony
Sony
KV32S22
AA-2
uneven brightness
KV32S22. Unit was dead. Has a glow at the top of Unit is missing the -15 volt source voltage to the vertical the screen only when the G2 voltage is increased. output
KV32S25
AA-2
KV32XBR48
AA-2
Both 2 and 4 of IC1501 are +12v and -15v.. Appears to have KV32S25. Unit has Bright glow at top of screen. the wrong inputs to the vertical output chip. Data line shorted uneven brightness Unit had 8 volts at pin 5 of vertical output chip. It is to ground. The clock line sitting at 5 volts with no clock supposed to be "0" volts. Also unit has no audio. signal. Removal of the PIP module restores the normal operation/ Unit has defective PIP module. Tech is trying to cure the vertical sweep defect but the not the sound. These are related to each other. This set will not develop vertical sweep unless there is data communications between the microprocessor and Jungle IC. Tech needs to monitor the SDA & SCL lines that are marked on this KV32XBR48 this is a AA2C chassis. The chassis. If there is a short on either line the set will loose television has no vertical sweep, and no sound. VERTICAL vertical sweep. Clue is you need the SCL & SDA lines to Tech replaced the vertical output IC without correcting the symptom control audio, if a short is on these lines or data is corrupt the set will have no audio too. There was no Data or clock on the UX board. Checking the presence of 9 volts we found it to be only 7 volts. Monitoring the protect diode D261 zener diode on the SDA line. Unit had a defective D261 on the UX
Sony
Sony
TSS Logs for Sony T