Grundig Repair Tips
Search: Grundig
Results 554
Results 554
| Make | Model Ch. | Symptom | Problem Solution | Solution | By: |
|---|---|---|---|---|---|
| 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 | ||
| Grundig | CUC7301 | PSU rebuild | Check mains smoother C626 47µ 385v or PSU may need rebuilding again | ||
| Grundig | CUC7301 | Poor regulation of psu | sm diodes cd 654 and cd656 leaky. They are type LS4148 but standard 1N4148 ,s work ok. | ||
| Grundig | CUC7301 | Pic pulled across to right | CT169 BC858B sm leaky | ||
| Grundig | CUC7301 | Pic goes bright & may trip | CT181 BC858B & CT186 BC848B sm on main pcb | ||
| Grundig | CUC7301 | off with a bang | C669 1000pf had dry joints causing burn up of pcb. Following parts replaced :- 2.5A fuse, IC638 uC3842AN, T665 chopper tr MJF18004C, D662 BA157 s/c, D663 ZPD3.6 3.6v zener s/c, R663 18R, R661 220R hi res, R669 5w | ||
| Grundig | CUC7301 | off chopper tr s/c c-b | T665 MJE18004C, D664, 666 1N4003, CD654,CD656 LS4148, IC630 UC3842A, D663 6.3v zener, R661 220R replaced & dry joint C669 | ||
| Grundig | CUC7301 | low sound -stuck in hotel mode | hold 'i' button whilst switching tv on. Use rc arrows to select hotel mode then off | ||
| Grundig | CUC7301 | Low sound & no set up menu | In hotel mode - to exit - hold down "i" button at sw on | ||
| Grundig | CUC7301 | Field lin poor, width reduced & HT only 100v | R666 & 667 in psu 0R82 had risen to 1R5 (values depend on crt size) | ||
| Grundig | CUC7301 | Dead - R542 10k or 13k o/c | When replaced overheated again - crack in print by lopt | ||
| Grundig | CUC7301 | Dead - lop tr s/c & replacement ran hot | CT169 BC858B buffer sm leaky | ||
| Grundig | CUC7301 | Dead - Chopper T665 blown plus - | IC630, D633 3v6 zener, D662 BA157, bridge rects D621-4 1N4007, R661 220R, R663 18R, 3 x sm diodes under psu sect, dry joints C669 | ||
| Grundig | CUC7301 | Dead | C669 1000pf dry joints & burnt; MJF18004 T665 s/c; ZD663 had 25R reverse resistance, D624/621 1N4007 mains rects s/c & UC3842AN faulty | ||
| Grundig | CUC7301 | Dead | Dry joint C669 blows T665 & IC630 | ||
| Grundig | CUC7301 | Blown psu caused by R661 220R going hi res | also replaced IC630 UC3842, T665 MJFS8004, D663 3v6 Zener | ||
| Grundig | CUC73 | WON'T START UP | D663 SC | ||
| Grundig | CUC720 | Won't start, PS squeals, relay remains open. | Change C655 100uF/25V cap. |