| Make | Model | Problem | Solution | Date |
| | | |
| Found: 901
|
| Hitachi | G8Q | No OSD | R008 470k o/c or dry jointed | 14-09-04 |
| Hitachi | G8Q | No raster - field collapse | Check pin 9 IC601 if low (should be 9v) check R715 1R for o/c | 14-09-04 |
| Hitachi | G8Q | NO SOUND | D701 ( 1N4148 ) , TDA2579. | 14-09-04 |
| Hitachi | G8Q | No sound | D701 1N4148 & TDA2579 timebase chip | 14-09-04 |
| Hitachi | G8Q | NO SOUND INT GOES TO STBY | IC1501 MICRO u/s. | 14-09-04 |
| Hitachi | G8Q | NO SOUND OP STAGE OK | D401 IN IF CAN OC | 14-09-04 |
| Hitachi | G8Q | NO SOUND PICTURE GOES WHITE | IC952 12v REG US | 14-09-04 |
| Hitachi | G8Q | No sound/pic - blank raster when A1 increased | Dry joint connection to sleeved wire that links 8v supply to IC001 5v reg | 14-09-04 |
| Hitachi | G8Q | No sound/pic - psu working ok | No 12v supply as reg was u/s | 14-09-04 |
| Hitachi | G8Q | No start up - st/by only | R903 82k o/c | 14-09-04 |
|
|
| Hitachi | G8Q | No startup - sounds like faulty BU. | C85 s/c. | 14-09-04 |
| Hitachi | G8Q | No sync | Q2110 BC548B on txt panel | 14-09-04 |
| Hitachi | G8Q | No text | Check programming | 14-09-04 |
| Hitachi | G8Q | No text - VERY weak text in mix + poor osd | TDA3562A us | 14-09-04 |
| Hitachi | G8Q | No tuning | R1534 39k hi res | 14-09-04 |
| Hitachi | G8Q | off | No volts pin 7 IC901 TH902 o/c & ZD901 s/c | 14-09-04 |
| Hitachi | G8Q | off - ht present | no line drive - IC701 pin 10 only 4v (12v) C933 2200µ also C932 470µ 16v & C934 220µ 16v | 14-09-04 |
| Hitachi | G8Q | Outline & shimmers | IC201 in IF panel | 14-09-04 |
| Hitachi | G8Q | Pic goes red & green aft 20 mins | TDA3562 col dec chip | 14-09-04 |
| Hitachi | G8Q | Pic obliterated by lines until heated | C720 4µ7 250v | 14-09-04 |
| Hitachi | G8Q | Picture blanks out when using VCR pic Search | Remove Q1507 & fit 2 x IN4148 1st between R1520 & Emitter Q1507 2nd between R1521 & emitter Q1507 Cathodes to emitter | 14-09-04 |
| Hitachi | G8Q | POOR CONTRAST | CHANGE R10 FROM 1Kohm TO 10Kohm | 14-09-04 |
| Hitachi | G8Q | Power supply shutting down. | Q941. | 14-09-04 |
| Hitachi | G8Q | psu blown | replace D906 1N4148, D907 BYV10, IC901 UC3844, Q901 SGSP222, Q902 SGSIF344, R910 0R5 7W, TH902, ZD902 ZTE2S1, ZD901 BZX79C & check mains bridge rect and small electrolytics | 14-09-04 |
| Hitachi | G8Q | Repeated failure of FOP chip TDA3654 | dry joint scan coil tag & replace cap pin 6 of chip - 47 or 100µ | 14-09-04 |
| Hitachi | G8Q | Severe tuning drift | R1501 high / oc 100k or may be 22k | 14-09-04 |
| Hitachi | G8Q | Slow start up with tearing | C933 2200µ 25v in 12v supply o/c | 14-09-04 |
| Hitachi | G8Q | St/by only | It is normal for front controls not to bring set out of st/by - check hset is working! | 14-09-04 |
| Hitachi | G8Q | Startup - slow start up. | TH902 should read 4k when cold. | 14-09-04 |
| Hitachi | G8Q | Stuck in AV mode | IC501 micro | 14-09-04 |