| Make | Model | Problem | Solution | Date |
| | | |
| Found: 4551
|
| Philips | L7.2E | St/by only - insufficient lin dr | LOPTx | 14-09-04 |
| Philips | L7.2E 21PT1663 | Reverts to st/by aft brief period (no pic) | Prot mode operating - FOP chip IC7401 was s/c & R3449 1R ?w, R3451 2R2 1/3w o/c. Fit BZX79C51 zener across pins 4 & 5 of FOP chip (anode pin 4) to prevent chip damage | 14-09-04 |
| Philips | L7.2EAA | Dead aft initial front LED lit bright | R3451 o/c due to Field chip IC7401 u/s & check D6468 | 14-09-04 |
| Philips | L7.2EAA | Field cct upgrade | Add 51v zener between pins 4 & 5 IC7401 (cath pin 5) | 14-09-04 |
| Philips | L7.3 | Tripping | C2550 across 9v supply leaky | 14-09-04 |
| Philips | L7.3 25PT4673 | Tripping | C2463 1000pf 2Kv across line o/p tranny | 14-09-04 |
| Philips | L7.3A | Clarification of LOT to be used | Clarification of LOT to be used Position 5445 (LOT) listed in the parts list in the service manual. L7.3A AA (4822 727 21566) are for different screen sizes: 4822 146 10961 all 25" sets 4822 146 10963 29" -/77 and -/78 only 4822 146 10966 rest of 29" s | 14-09-04 |
| Philips | L7.3A | Codenumber information | Codenumber information LOT applied in 25" sets of L7.3A AA have codenumber 4822 146 10961.LOT applied in 29" sets of L7.3A AA have codenumber 4822 146 10966. | 14-09-04 |
| Philips | L7.3A | FOR ALL 25" & 29" Change of service code | FOR ALL 25" & 29" Change of service code The code number of the Mains Switch on pos. 0139 listed in service manual L7.3A (4822 727 21566) has been changed from 4822 276 13603 into 4822 276 13816. | 14-09-04 |
| Philips | L7.3A | LOT survey clarification in service manual 4822 72 | LOT survey clarification in service manual 4822 727 21566. The code numbers for the LOT on pos. 5445 listed in service manual 4822 727 21566 should be completed with the description listed below: 4822 146 10961 for all 25" sets 4822 146 10963 for 29"/78 & | 14-09-04 |
|
|
| Philips | L7.3A | Set in protection due to wrong setting of optioncode "88" OFF | NOTE: For Bimos TDA884X family option code must be "88" and "ON"1) Disconnect position 5620 (so temporary WITHOUT +5Volts to NVM) see circuit diagram A5(Control) and PCB coordinates D2;THEN SWITCH TV "ON"2) Connect coil at position 5620 again when scree | 14-09-04 |
| Philips | L7.3A | Set in protection; no Supply Voltage (+11Volts and -11Volts) at IC7401 | Replace IC7401 by a new one, add additional diode BYD33D and also change capacitor at position 2404 to 220nF (4822 121 42868).
Solution: Solder diode BYD33D (4822 130 42488) with anode to pin 4 of IC7401 and cathode to pin 5 of IC7401. Change capacitor | 14-09-04 |
| Philips | L7.3A | Video ampl. (pos.7830; TDA6107Q/N1; 4822 209 16321) damaged by flash | Change three components at CRT panel to prevent damage of IC7830. Replace resistors on positions 3832, 3834 and 3836 from 680 R to 1 K (service codenumber 4822 117 11635)
REMARKS : IRIS CODE 1 3 1 X. | 14-09-04 |
| Philips | L7.3A 25PT4473/79R | Dead with slight arcing sound | capacitor 2463 1000pf 2KV ceramic disc arcing | 14-09-04 |
| Philips | L9.1 25PT4475 | sound int. goes off or no sound when warm | resolder Xtal 14MHz located next to pin 64 IC1822 | 14-09-04 |
| Philips | L9.1A | Set in protection mode. After entering SDM mode LED blinking (3x) | Check and replace if necessary IC 7401 (TDA9302H; 4822 209 13176) and add an additional capacitor of 220nF 100V (4822 121 42868).
Solder the capacitor between pins 3 & 4 of position 7401 or between the ground of position 2403 and position 3491.
See att | 14-09-04 |
| Philips | L9.1E | Flickering of video signal during yellow picture content | Add a capacitor of 1nF (5322 126 10511) parallel to capacitor 2221 on the
family board.
IRIS CODE : 341X | 14-09-04 |
| Philips | L9.1E | TXT hold function doesn't work. | Check and replace if necessary position 7600 on the mono-carrier by 9352
672 22112 (L90EF1-1.9).
IRIS CODE : 177X | 14-09-04 |
| Philips | L9.1E 25PT4475 | No sound aft tuner replacement | Check option bytes in serv mode (enter by pressing 0,6,2,5,9,6,& menu) option SB incorrect | 14-09-04 |
| Philips | L9.2 21PT4456 | Dead - after replacing fusible 1572 MP80/160 with N20 in lieu, T.base works with EHT & crt htrs | ICP 1572 feeds reg 7602 which provides 3.3 volt to painter chip 7600 (SAA5564Ps/M3/0181) which was U/S (?58+VAT) | 14-09-04 |
| Philips | L9.2E | Addition to Service Manual L9.2E AA | Description for the Hotel mode is missing. This description is given in
the attached DOC and/or PDF file.
Involved Service Manuals:
GB 4822 727 21684
NL 4822 727 21685
D 4822 727 21686
F 4822 727 21687
I 4822 727 21688
E 4822 727 216 | 14-09-04 |
| Philips | L9.2E | Correction to Service Manual L9.2E AA | The codenumber of position 7705 on page 57 is not correct.
Present situation: 7705 4822 209 31555 TDA9830/V1
Correct situation: 7705 9350 549 90118 TDA9830T/V1
Involved Service Manuals:
GB 4822 727 21684
NL 4822 727 21685
D 4822 727 21686
F 4822 | 14-09-04 |
| Philips | L9.2E | Correction to styling 264 of Product Survey 2000-2 (3122 785 10510) | The position numbers and code numbers of positions 1, 2, 3 and 4 are not correct.
It must be:
1a 3139 137 73831 Cabinet
1b 3139 137 77081 Cabinet
2a 3139 124 32291 Rear Cover
2b 3139 124 35311 Rear Cover
3a 3111 250 00641 Wordmark
3b 311 | 14-09-04 |
| Philips | L9.2E | Correction to styling 264 of Product Survey 2000-2 (3122 785 10510) | The position numbers and code numbers of positions 1, 2, 3 and 4 are not correct.
It must be:
1a 3139 137 73821 Cabinet
1b 3139 137 77041 Cabinet
2a 3139 124 32291 Rear Cover
2b 3139 124 35311 Rear Cover
3a 3111 250 00641 | 14-09-04 |
| Philips | L9.2E | Geometry disturbance depending on the picture content | Change the TUNER/CL option in the Service Alignment Menu (SAM). Lower the
value of CL until problem is minimized.
REMARKS :
For the procedure how to get into SAM see Service Manual L9.2E AA
IRIS CODE : 1335 | 14-09-04 |
| Philips | L9.2E | L9.2E Service Manual | In the L9.2E Service Manual (4822 727 21684), a
diversity table is used on page 'GB34' (schematic A10).
Item 7953 is referred to as TDA7052B - soundamplifier 2W/3W/4W and
item 7954 is referred to as TDA7056B - soundamplifier 1W
This however is no | 14-09-04 |
| Philips | L9.2E | TXT hold function doesn't work. | Check and replace if necessary position 7600 on the mono-carrier by 9352
672 22112 (L90EF1-1.9).
IRIS CODE : 177X | 14-09-04 |
| Philips | L9.2E | Volume control is only adjustable to maximum or minimum volume | Check if position 2951 on the monocarrier is present. If not present mount a capacitor of 10uF (4822 124 40248) on position 2951.
IRIS CODE :152X | 14-09-04 |
| Philips | L9.3A | Front clock doesn't raise to the good time. | Cause : Too high sensitivity of clock IC1.
Change the resistor R3632 on Side Interface Panel code number 3139 178
59671 from 68K code number 4822 051 20683 into 22K code number 4822 051
20223.
IRIS CODE : 1171 | 14-09-04 |
| Philips | L9.3E | Front clock doesn't raise to the good time. | Cause : Too high sensitivity of clock IC1.
Change the resistor R3632 on Side Interface Panel code number 3139 178
59671 from 68K code number 4822 051 20683 into 22K code number 4822 051
20223.
IRIS CODE : 1171 | 14-09-04 |