Dicas Reparação GRUNDIG
Modelo - Chassis CUC7350
Pesquisa: CUC7350 GRUNDIG Enviar Dica Resolvida
Resultados 17
Pedir dica reparação
| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| GRUNDIG | CUC7350 | Ecran sem luminosidade. Aumentando UG2 aparece branco com linhas de retorno e pouca largura. Tensão HT cai para 65V. Fazento teste com lampada de 60W, esta não acende. | R60028 de 0R56 alterada para mais em cerca de 0R20. | ||
| GRUNDIG | CUC7350 | Quando se liga aparece imagem com falta de sincronismo vertical. Após alguns segundos cai a stby | Transistores CT58006 e CT58007 (SMD) | ||
| Grundig | CUC7350 | Dead - mains fuse shattered | D60013/4 mains rects s/c, chopper FET T60020 IRFBC40 s/c used BUZ90 UC3843 replaced as prec,caused by dry joints chopper tfmr | ||
| Grundig | CUC7350 | Dead - +8v supply absent | R61021 15R safety res in 8v reg o/c | ||
| 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 100µ 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 |