| Make | Model | Problem | Solution | Date |
| | | |
| Found: 4551
|
| Philips | G90AE | Blank raster - Txt OK | pin 7 TDA3561A was -ve instead of 3.4v; C2560 33nF o/c | 14-09-04 |
| Philips | G90AE | Blank raster & no sound | TDA5850 | 14-09-04 |
| Philips | G90AE | Blank raster , no sound , no OSD. | IC TMP47C434N-3555 IC7720. | 14-09-04 |
| Philips | G90AE | Blank raster with no sound. OSD or response to R/C | IC7720 reset line pin 33 stuck at 2v - chip had internal leak TMP47C434N-3555 | 14-09-04 |
| Philips | G90AE | BLANK SCREEN NO SOUND | RESET AT 2v IC7720 PIN 33 IF DROPS WHEN PIN 33 ISOLATED REPLACE IC TMP47C434N-3555 | 14-09-04 |
| Philips | G90AE | Blocks/Wrong OSD-indication | Disconnect pins 2 and 3 IC 7800 (TXT-uP), set functions normally.
Replace IC 7800 (MAB 8461P/W196; 4822 209 62479).
Mount metal shielding 4822 466 82783 on uP (IC 7720) with earth to jumper 9711. | 14-09-04 |
| Philips | G90AE | Characters wrong | Replace IC 7820 (SAA 5243P/E; 4822 209 30556) and
replace IC 7800 (MAB 8461P/W196; 4822 209 62479) | 14-09-04 |
| Philips | G90AE | Cogging effect | C2630 47µ 160v HT res cap also change C2631 smoother | 14-09-04 |
| Philips | G90AE | Dark picture - no remote commands. | Replace IC 7720. | 14-09-04 |
| Philips | G90AE | Dead | D6617 6v2 zener s/c; R3668 150R sm dry joint | 14-09-04 |
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| Philips | G90AE | Dead - BIT11AF chopper s/c fit repair kit | Pt no 4822 310 20496 tells you to fit 2 x 1N5061. Connect in series between chopper tr base - emitter (anode to base) | 14-09-04 |
| Philips | G90AE | Dead - blows BUT11AF chopper even with kit fitted | o/c between pin 18 of chopper tfrmr & D6645 due to o/c sm link 3645 | 14-09-04 |
| Philips | G90AE | Dead - Full HT 95v with 120v ac I/p | HT reduces as mains I/p is increased - D6653 BAS32 in psu sec s/c | 14-09-04 |
| Philips | G90AE | Dead - mains fuse shattered | BUT11AF s/c - fitted repair kit & dry joint R3610 24k; 3 x BZV55/F33 6657/8/9 s/c sm. MAKE SURE SET IS NOT IN ST/BY WHEN CHECKING- IF SW OFF OIN ST/BY WILL COME BACK ON IN ST/BY | 14-09-04 |
| Philips | G90AE | Dead - no 95v HT to LOP stage | Crack in print by runner at edge of pcb in 95v supply line | 14-09-04 |
| Philips | G90AE | Dead - no HT but present on dummy load | LOPTx faulty also Line osc IC had dist waveform o/p - chip faulty | 14-09-04 |
| Philips | G90AE | Dead - no o/p from psu | Thy 6670 SFOR5D43 s/c | 14-09-04 |
| Philips | G90AE | Dead - PSU o/ps low | Tr7654 BC847C leaky | 14-09-04 |
| Philips | G90AE | Dead - s/c on lop stage | LOPTx faulty though tested ok on tester | 14-09-04 |
| Philips | G90AE | Display - shows F4 or F7. | Replace IC 7720. | 14-09-04 |
| Philips | G90AE | Displaying error code F7 extremely intermittently. | Error code denotes fault in text circuit. If possible when fault condition present, check +5 volts to text chips. If 5 volts is missing, check/replace SMD link - 3901 in text circuit. | 14-09-04 |
| Philips | G90AE | Does not function | Voltage +95 V not present
Mount SOPS repair kit (SBC 7023; codenumber 4822 310 20496) | 14-09-04 |
| Philips | G90AE | Does not function well | Wrong characters on screen.
Replace IC 7720 by repairkit 4822 310 31848
This repairkit consists of IC7720 (TMP47C434N-3555) and a metal shielding. | 14-09-04 |
| Philips | G90AE | Does not tune optimally | Re-adjust S5034 and S5035.
See service manual CHASSIS G90AE (4822 727 16447) page 4 points 10 and 11. | 14-09-04 |
| Philips | G90AE | Error code F7 after loptx replacement | F7 code denotes fault in Txt - C2843 220µ 16v & replace C2640 & C2660 680µ | 14-09-04 |
| Philips | G90AE | F7 displayed, no snd, pic ok. (all OK when warm) | C2843 (220uf 25V; 4822 124 41545).
| 14-09-04 |
| Philips | G90AE | Fault codes F4 or F7 with no sigs & LED orange | EEPROM or Txt chip faulty - use of heat & freezer usually determines faulty comp. If reset with EEPROM chip hot does not work then chip is faulty | 14-09-04 |
| Philips | G90AE | Field collapse | Wickman fuse in supply to FOP chip o/c but R3503 & 3507 22R overheat when fuse replaced - R3501 390R leaky | 14-09-04 |
| Philips | G90AE | Field reduced height with top foldover | R3508 24k hi res | 14-09-04 |
| Philips | G90AE | Flash-overs on the CRT board. | Replace C2397 by a new type code 4822 121 41926.
REMARKS : The code number published in the report "complaints of the steco segment" dated 1992-02-14 was not correct. Production has been adapted from week 9149 onwards. | 14-09-04 |