| Make | Model | Problem | Solution | Date |
| | | |
| Found: 8
|
| NEI | C28F1FXN | Blank raster/no sound | R121 270k in beam curr/scastle pulse o/c | 14-09-04 |
| NEI | C28F1FXN | Dead | C131 0µ91 cap in lop stage burnt due to dry joints & BU508 & 2 x E/W diodes, D110 HT rect s/c | 14-09-04 |
| NEI | C28F1FXN | Dead | Fit Power supply repair kit (Phoenix modkit 15, may still be available from CHS order code 39000H ) and check for dry joints around C133; snubber circuit. | 14-09-04 |
| NEI | C28F1FXN | Dead - burnt hole by C133 330n 250v | TR128,[BU508AF]/ D116,[BY228]/D117,[BY299]/ R371,[1r safety]/. If R366,[2r2 safety] is o/c the EW chip TDA8145 is s/c and you will find R154,[27r safety] in the feed to the chip o/c. I had to change the chopper transistor that was s/c TR100,[SGSIF344] and for good measure IC100,[TDA8380] and IC101,[TCTD1101 were also changed. if you find problems setting up the EW you may find RV105,[100K] has changed in value. | 14-09-04 |
| NEI | C28F1FXN | E/W dist & overwide | IC107 TDA8145, R366 2R2 & R371 1R safety res | 14-09-04 |
| NEI | C28F1FXN | Field bounce for first 5 mins | Check elect caps in IF unit | 14-09-04 |
| NEI | C28F1FXN CE25 | Dead - st/by LED flashes | C110 220µ 63v low cap | 14-09-04 |
| NEI | C28F1FXN CE25 | No E/W or width settings | IC106/7 replacement have no effect - no line pulse to IC107 TDA8145 - R122 150k o/c | 14-09-04 |