Make | Model | Problem | Solution | Date |
| | | |
Found: 10
|
Grundig | CUC7303 | Dead - PSU blown | Chopper tfmr, S2055 LOPTr & FOP chip | 14-09-04 |
Grundig | CUC7303 | Dead apart from LED flashing | Sw mode trnfmr o/c winding between pins 5 & 7 (was able to repair) | 14-09-04 |
Grundig | CUC7303 | Dead with mains fuse o/c | Degauss positor | 14-09-04 |
Grundig | CUC7303 | Led blinks at 1 Hz rate,no start-up | Change D667 (BA 157) even if it reads ok!!. | 14-09-04 |
Grundig | CUC7303 | off burning smell | bad joints mains sw | 14-09-04 |
Grundig | CUC7303 | St/by LED blinks (tripping) | D667 BA157 -use BA159 in lieu, UC3842 supply rect (measured ok) also check 0R82 res in emitter, 2 x 1N4004 & res 220R & sm LS4148 diodes & HT control for o/c + chopper Tr & IC | 14-09-04 |
Grundig | CUC7303 | Won't go fully into st/by - crt heaters stay lit etc | Pin 1 IC676 should drop to 1.2v in st/by - was staying at 10.7v. BC848 sm tr downstream from pin 1 was faulty though checked ok | 14-09-04 |
Matsui | 14V1T CUC7303 | Dead - Chopper FET s/c | HT res cap 47µ 385v o/c | 14-09-04 |
Matsui | 20V1 CUC7303 | Dead | Replace T665 (MJF18004), IC630 (UC3842AN), R661 (220R) & D663 (3.6V Zener).caused by dry joint C669 | 14-09-04 |
Matsui | 20V1 CUC7303 | LED pulsing | D667 BA157 - read ok out of cct | 14-09-04 |