| Make | Model | Problem | Solution | Date |
| | | |
| Found: 4551
|
| Philips | L6.3 | Loses sigs aft 10 mins & no osd | 7505 BC337-40 | 14-09-04 |
| Philips | L6.3 | No sound - noise only from speakers | MPS3410 chip faulty - replaced audio pcb | 14-09-04 |
| Philips | L6.3 | The set does not work anymore after switching it into the standby mode | Replace the line output transistor 7906. Also replace the line output
driver transistor 7421 by type BC368-25 (use only a Philips version)
The service code of BC368-25 is 933869720112.
REMARKS :
The cause is that the line output transistor 7906 | 14-09-04 |
| Philips | L6.3 21PT4494 | dead | chopper Tr s/c, LOPTr s/c. use power kit 4822 310 10663 and replace LOPTr BUT11AX | 14-09-04 |
| Philips | L6.3 25PT4494/05 | St/by only | Replace o/c 630mA fuse (1502) (4822 252 51185) | 14-09-04 |
| Philips | L6.3 25PT4494/05 | St/by only | Replace o/c 630mA fuse link (1502) (4822 252 51185) and BC337-40 transistor (7505). | 14-09-04 |
| Philips | L6.33AA | Dead or tripping | 7505 BC337-40 & cct prot 1502 | 14-09-04 |
| Philips | L6.33AA | No R/C operation aft 5 mins, crackling then int off | 7505 BC337-40 | 14-09-04 |
| Philips | L6.3AA | Field collapse | 1 ohm resistor 3928 tucked away on the bottom of the upright PCB next to the loptx. | 14-09-04 |
| Philips | L6.3AA 25PT4495/05 | Int lock up of controls - only cured by sw off & on again | Reg Tr7505 BC337/40 | 14-09-04 |
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| Philips | L6.3AA 25PT4495/05 | Tripping - s/c in LOP | C2912 2n2 | 14-09-04 |
| Philips | L7.1A | Bad focus or focus varies in a new set or after CRT replacement | Possible solution: Short circuit the focus and the G2 pins of the picture tube with the aquadag coating. Switch the set on for approximately 5 seconds. After this return the set to its original condition. Check if the focus adjusted normally. If not repla | 14-09-04 |
| Philips | L7.1A | Codenumber correction | Codenumber correction service manual this codenumber for postion 7600 is not correct; listed below you will find the correct codenumbers.
TXT SAA5290ZP/068 :4822 209 15699 TXT A/P NTSC P083CO55BBP/177 : 4822 209 15563 A/P LATAM P083CO55BBP/179 : 4822 | 14-09-04 |
| Philips | L7.1A | Codenumber information | Codenumber information
LOT in use for 14" and 20" have service codenumber 4822 140 10612
LOT in use for 21" have service codenumber 4822 140 10638.
REMARKS: Will be applied in L7.1a AA chassis. | 14-09-04 |
| Philips | L7.1A | Correction Service Manual | Correction Service Manual: For L7.1A AA. In the service manual of the L7.1A AA some errors occured on page 8: Change text above table from Europe version to PAL-Multi AP. In the option table, the options Child-lock and Magnavox have been removed which imp | 14-09-04 |
| Philips | L7.1A | Modification | Modification: For L7.1A AA 20" Typenumbers 20PT1XXA/75R, 73R, 50B, 59S, 70B .The CRT panel used on the mentioned sets has been changed to 4822 212 11499 from production week 9723 onwards. For sets with production before 9723, the old CRT-panel 4822 212 11 | 14-09-04 |
| Philips | L7.1A | Strange behaviour of the MENU pictures and the sound volume level | Replace network resistor item 3601 (see Diagram A4)
REMARKS: The reason for the above mentioned symptom is that in some network resitors some leakage current can occur.
IRIS CODE 235X | 14-09-04 |
| Philips | L7.1A AA | Dead | 2R2 5w res o/c, 330pf 2kv near fet split & replace fet with BUZ90 & mica washer | 14-09-04 |
| Philips | L7.2 | Totally inoperative, only red LED. No +95 Volt | Check soldering of L5451.
| 14-09-04 |
| Philips | L7.2 21PT4424/05 | Reverts to st/by aft 3 secs | FOP chip overheats causing R3451 2R2 0.5W o/c near LOPT and frame IC7402 TDA9302H u/s (replaced with TDA8172) | 14-09-04 |
| Philips | L7.2A | Codenumber information | Codenumber information : In the partlist of the manual of chassis L7.2A AA is mentioned for LOT item 5454 code 4822 140 10634. This is the code number for the 14" and 20" executions. The code number for the 21" was not indicated. This code number is 4822 | 14-09-04 |
| Philips | L7.2A | Codenumber information | Codenumber information:I n the partlist of the chassis manual of L7.2A the code numbers of the microprocessors item 7600 where not indicated. For the code numbers see below:
PAL/MULTI with TXT 4822 209 16173 (SAA5297PS/054) version PM2.1 -
PAL/MULTI n | 14-09-04 |
| Philips | L7.2A | Distorted and cracking sound during NICAM sound reception | Replace the capacitors item 2225 and 2226 (both 10pF) on the NICAM panel by capacitors with a value of 1.5pF (5322 126 10225).
REMARKS: IRIS CODE is 1532 | 14-09-04 |
| Philips | L7.2E | Crack in sound when switching to a stereo FM program (2CS) | This happens before the word "stereo" appears on the screen.
Put the sound board option code (SB) to IT position instead of NI.
This setting will be activated if you switch the TV set OFF and ON.
REMARKS : IRIS CODE 1 5 4 X. | 14-09-04 |
| Philips | L7.2E | Dead - eht comes up then goes to st/by | Field o/p IC TDA9302H - -ve I/p s/c to chassis - chip u/s | 14-09-04 |
| Philips | L7.2E | How to enable/disable Hotel mode | See chapter 5.7 Chassis doc L7.2E AA, but with some difference in menu handling.
Pr 38, local vol -/+ and RC OSD > 3 sec. Hotelchannel 38 appears, you can get confirmation by using the stop rule but this is not necessary. Now the intallation menu is unac | 14-09-04 |
| Philips | L7.2E | Installation impossible | When child-lock is actived for one channel then it is impossible to install new channels. You have to find the channel that is locked, or set child-lock for all channels and then you can disable childlock (for all channels at once). If you forgot your con | 14-09-04 |
| Philips | L7.2E | No vertical deflection | Replace IC7401 (TDA9302H), add also a zenerdiode BZX79C51 between the pins 4 and 5 of the IC. Anode of the zenerdiode to pin 4 and the cathode to pin 5. Service code BZX79C51 is 4822 130 34257
REMARKS :It is recommended to apply above mentioned modifica | 14-09-04 |
| Philips | L7.2E | Preventive action | Preventive action: For all L7.2E sets brought in service, the next action should be done in order to prevent frame IC7401 (TDA9302H) from damage. Mount a zenerdiode BZX79-B51 (4822 130 34257) anode on pin 4 IC7401, cathode on pin 5 IC7401. In case IC7401 | 14-09-04 |
| Philips | L7.2E | Rattle or no sound during autosearch and receiving 2CS BG programs | Replace the IC7202 (MSP3400) on the audio board by MSP3410D.
Service code 4822 209 15832
REMARKS: Fault only occurs in types 21PT4204/00; 21PT4305/00; 21PT4404/00; 52TA4315/03 | 14-09-04 |