| Make | Model | Problem | Solution | Date |
| | | |
| Found: 99
|
| Bush | 2550NTX | Cuts out aft several hrs with HT rail pulsing | R816 47R sm feedback to chopper chip int o/c | 14-09-04 |
| Bush | 2550NTX | Preventative maintenance | Check scan coil plug for dry joints - if burn up occurs could be write off | 14-09-04 |
| Bush | 2557NTX | Dead with blackened mains fuse | BR901 mains bridge rect s/c, C905 220µ 400v s/c | 14-09-04 |
| Bush | 2557NTX Onwa | Dead - s/c LOPTr & buzzing | L401 dry joint B+=145v | 14-09-04 |
| Bush | 2557NTX Onwa | Dead with psu buzzing - LOPTr s/c | Dry joints L401 & fit BU2508AF LOPTr - check separate psu caps for hi HT - 10 & 47µ | 14-09-04 |
| Goodmans | 255NS | Bright Blue blank raster | Connector on crt base leaky | 14-09-04 |
| Goodmans | 255NS | Contrast weak & poor sync on AV2 | DA18 5v6 zener s/c | 14-09-04 |
| Goodmans | 255NS | Dead with psu running | No or low line drive at base Q402 line dr - check Trs Q405 2SA854 & Q406 2SC945 for leak | 14-09-04 |
| Goodmans | 255NS | Field collapse | Replace field chip IC301 (TBA8351), C413 (47uF 160v) and D408 (BYV95C) & check for dry joints | 14-09-04 |
| Goodmans | 255NS | no picture - sound, heaters, EHT were OK. | Decoupling cap C417 4n7 400v leaky | 14-09-04 |
|
|
| Goodmans | 255NS | No sync - line or field | TDA8362 sig proc chip under screening can | 14-09-04 |
| Goodmans | 255NS | Reverts to st/by int | R840 150R, Q803 BUT11, D811 BYV950 | 14-09-04 |
| Goodmans | 255NS | WEAK CONTRAST AND POOR SYNC ON AV2 | REPLACE DA18 | 14-09-04 |
| Goodmans | 255NS/285NS | Blank raster int reverting to st/by - no R/C response | No osc on I602 multi sound proc chip - resolder X601 or replace Xtal | 14-09-04 |
| Goodmans | 255NS/285NS | OSD smeary - esp on Greens | I501 TDA8375A leaky across G/B I/p pins - replace IC | 14-09-04 |
| Hitachi | C2556/2586 | HT setting | 152v | 14-09-04 |
| Hitachi | C2556TN | Dead | R950 68k ?w hi res (near ht pot) | 14-09-04 |
| Hitachi | C2556TN | INT DEAD | Dry joints set HT pot | 14-09-04 |
| Hitachi | C2556TN | Int dead | check dry joints IC951 | 14-09-04 |
| Hitachi | C2556TN | Int goes dead only to reapear several secs later | Dry joints pot R950 - tight up against plastic cradle | 14-09-04 |
| Hitachi | C2556TN | Int goes to st/by or off | Happens when disturbed mainly - check wire links at front of pcb for dry joints | 14-09-04 |
| Hitachi | C2556TN | Int loss of sound/pic | Dry joints L7805 IC951 5v reg | 14-09-04 |
| Hitachi | C2556TN | Int off when disturbed | Check HT pot VR950 by replacement- & check R950 | 14-09-04 |
| Hitachi | C2556TN | Trips 3 - 5 secs aft sw on | R950 68k hi res | 14-09-04 |
| Hitachi | C2557N | Weak sound & low contrast | C758 100nf S/C ALB line. | 14-09-04 |
| Hitachi | C2558 | repeated failure of TDA3654 field o/p chip | dry joint scan coil tag also replace flyback boost cap to pin 6 (47 or 100µ) | 14-09-04 |
| Hitachi | C2558TN | High HT | R941 100k, ZD941 10v zener - HT = 157v | 14-09-04 |
| Hitachi | C2558TN | Slow start up | 12v rail low - C933 2200µ 25v | 14-09-04 |
| Hitachi | C2558TN | st/by - wont come out of using front controls | use hset - reason u/k | 14-09-04 |
| Hitachi | C2558TN | Tripping to st/by | C931/2/3 on sec of sm trfmr - Note R/C reqd to bring set out of st/by | 14-09-04 |