Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Grundig | P37-070 - CUC7301 | s/ imagem, s/ som por RF, normal via scart. | CT840 (BC848) | ||
Grundig | CUC7301 | Só se mantem ligado mantendo premida tecla P+ | T511 BC549 com fugas | ||
Grundig | T51-070 CUC7301 | Cenario escuro, não controla contraste nem luz | T523 BC548 | ||
GRUNDIG | CUC7301 | Falta de sincronismo vertical no OSD. Esta sempre a passar | R404 (33K) na linha V SINC. que vai ao processador. (SMD partida) | ||
GRUNDIG | T51-070 CUC7301 | Cai em prot. Desliga | T511 = BC548 | ||
Grundig | CUC7301/3 | Power supply blown | This is often caused by a dry joint at C669 in the snubber network but also check the mains bridge rectifiers reservoir capacitor 47uF, 385v for o/c, this item is not included in the ususal p.s.u repair kits and if not checked may result in a repeat blow up ! | ||
Grundig | CUC7301/3 | Mains fuse S1600 2.5A blows int | 1N4007 mains rect diode, also check IC630, T665chopper tr, zener D663, R661220R,Caps C661/663/656 & 667 | ||
Grundig | CUC7301/3 | Dead after dry joint C669 caused havoc | T665 MJF18004C chopper s/c; IC630 µC3842N/AN; D621-4 1N4007; R661 220R; D663 3v6 zener; CD651 ZD18v; D667 BA157 leaky. | ||
Grundig | CUC7301/3 | Dead - PSU blown | Caused by dry joint C669 - repair kits available from SEME or CHS also check C626 47u 385v for o/c | ||
Grundig | CUC7301 | Dead aft few mins - line drive lost | Buffer CT169 BC858B sm tr faulty | ||
Grundig | CUC7301 | Vert cogging, line speed int decreases with narrow pic & overheating LOPTr | CT169 BC858B sm pre-driver tr (2" back from jungle chip - LOPTx side of scart skt) | ||
Grundig | CUC7301 | Tripping with front led flashing | No HT on dummy load - HT preset R654 470R o/c | ||
Grundig | CUC7301 | St/by only | C667 100µ 35v | ||
Grundig | CUC7301 | Sound only - burst of line at sw on only | Line osc at base of Line dr tr - nothing at collector. CT169 line osc buffer BC858B sm faulty. Note - HT is 105v when set working but rises to 129v in st/by or when non operational - normal? | ||
Grundig | CUC7301 | Reduced width and line tearing when TV gets hot. | Replace surface mount transistor CT169 BC858B |