GRUNDIG TV Repair: Common Faults and Solutions.
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Results: 948
Results: 948
GRUNDIG Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| GRUNDIG | CUC740 | Dead - chopper tr blows instantly at sw on | R633 27r o/c in base cct - also blew loptr | ||
| GRUNDIG | CUC740 | Chopper tr blows instantly | R633 27r o/c in base cct - also blew lop tr | ||
| GRUNDIG | CUC73XX SERIES ST55-725 | Sound faulty | The soldered joints on c60029 were very poor | ||
| GRUNDIG | CUC73XX SERIES ST55-725 | Power supply blow up | Caused by c60029 470pf 1.6kv which was badly dry jointed. only seems to affect sets fitted with blue cap - the orange ones are ok. | ||
| GRUNDIG | CUC7350 | Width varies with pic content - ht varies between 119-129v | R60027 0r56 in curr sensing network - also check r60028 in parallel - values vary with screen size | ||
| GRUNDIG | CUC7350 | Unstable ht | R60028 0r68 o/c - check it out of cct! | ||
| GRUNDIG | CUC7350 | Tripping | R60027/28 0r46 gone hi res | ||
| GRUNDIG | CUC7350 | St/by only | Lm317t reg s/c by its heatsink clip | ||
| GRUNDIG | CUC7350 | No sound | Check sm trs to left of audio ic - mute sound in st/by & when told by micro - bc848c faulty in this case | ||
| GRUNDIG | CUC7350 | No ht control | Ht pot r60027 increased in value from 0r68 to 1r5 | ||
| GRUNDIG | CUC7350 | Mains fuse o/c, buz chopper tr s/c | Dry joint c60029 470pf 1.6kv also check d60011-14 & d60023/4 rects | ||
| GRUNDIG | CUC7350 | Int start up | C60031 100ยต 35v in psu | ||
| GRUNDIG | CUC7350 | Dead irfbc40 chopper mosfet failure | Dry joints c60029 470pf. check r60027/28 0r46, r60022 10r, d6011-14 d60023-24 1n4007 | ||
| GRUNDIG | CUC7350 | Dead - chopper fet & 2 rect diodes s/c | Dry joint on c600 - blew again later due to arcing between fet & heatsink | ||
| GRUNDIG | CUC7350 | Dead - 2.5a fuse blackened | T60020 irfbc40 chopper tr s/c; d60013 1n4007 mains rect s/c; c60029 dry joints; r60023 1n4003 s/c; r60027 0r56 o/c | ||
| GRUNDIG | CUC7350 | Dead | Chopper fet & control ic partial cure but all volts low until r60027/8 0r56 1w reistors replaced | ||
| GRUNDIG | CUC7350 | "e" instead of "ok" shows when storing | Sw on with "prog -" button depressed to clear "fault" | ||
| GRUNDIG | CUC731KT | No start up | D633 1n4935 s/c | ||
| GRUNDIG | CUC7306 | Auto tune problems | If auto tune used it defaults to wrong tv standard be aware! | ||
| GRUNDIG | CUC7305 | No vid or sound | Sm tr ct840 bc848b vid sw tr faulty |