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 | T63-640A TEXT CUC6310 | Image very cropped on the sides and half-moon. | C567(360nf) totally disabled | Duartes | |
| GRUNDIG | ST63-640 CUC6310 CUC6310 | Image very cropped on the sides and in half moon, e/w adjustment res r462,460 and 431 do not act. tda8145 with excessive heating. | Power supply of fault l569 with shorted turns, or d566 shorted, check tda8145, check c461 (100mf/35v) - c412(1000mf/35v)- c413 (1000mf/35v) | Duartes | |
| GRUNDIG | GDR5400 | Device completely inoperative, 12v v953 regulator very hot. | Regulator v953 very hot due to short circuit, the culprit was identified: capacitor c605 on the board containing the tuner with a resistance of 0Ω. sent by: mfm | ||
| GRUNDIG | GV400 / GV440 | Display shows "locked" sometimes timer is blinking | Cassette loading is at fault, replace loading gear complete | ||
| GRUNDIG | M70-1690 CUC6369 | Dead, si621 1.6amp blown apart | Replace si621 1.6a, si601 2.5a, d620 b380 c2000/1500 rec, t644 irfbc40 mosfet, ic631 tda4605-3, c633 100uf,25v, this was caused by dry joints on c648 | ||
| GRUNDIG | 8214 | Poor linearity / vertical deflection problems | Check +d voltage on pin 12 of the vertical deflection module. if this voltage is less then 35v or has ripple replace c628 3300uf, 50v, also check fuse si627 t3,15a. sometimes this fuse has resistance causing a voltage drop across it | ||
| GRUNDIG | CUC3500 | No sound av-mode sound ok | Replace ic2210 u2829 | ||
| GRUNDIG | CUC4400 | E.h.t very weird, e.h.t. transformer makes strange sound, no image | Measure pin 1 of the tda2579, if tsound are vertical pulses then measure pin 11 of the tda2579 for hor. pulses, if missing, or voltages are very low mv replace the ic. the ref. voltage on pin 12 will be present if the tda2579 works correctly. measure on pin 10 of the ps | ||
| GRUNDIG | CUC4400 | No image from tuner. image from av input rgb is rolling over the screen no synchronisation | Check if teletext is present at the top of the screen. if this is ok replace the tda5931 normally the sound will also be missing | ||
| GRUNDIG | ST82-675/9 TOP CUC6380 | Dead set, tripping | Loptx short circuit between most pins! | ||
| GRUNDIG | VS500VPS | All power is oscillating | Select 4934 on remote then 0000 key, should then clear | ||
| GRUNDIG | P55449 CUC4401 | Dead but comes on when warm | Replace c633 100uf in the p.s.u | ||
| GRUNDIG | CUC2080 | After replacment of fbt, the set starts and reverts to standby mode immediately. if the crt heater is fed by an external transformer i.e. 6 v. a/c, the screen will show a very weak light, except in the corners | 13v. was present on pin 11 of v. output ic tda8350q during the brief moment when the set tried to start. the tda8350q was found to be defective and was replaced. don't forget to check +a voltage after replacing the fbt | ||
| GRUNDIG | M70-495 CUC-3800 | Dead set | I replaced the bu546 transistor in the power supply and resoldered some paths on the pcb. an intermittent soldering path to the collector of the transistor was the reason for the destroyed bu546 | ||
| GRUNDIG | ST82-774 TOP/EURO | Not starting, power supply working perfectly display present | Replaced the horizontal deflection power driver ic tda8140 | ||
| GRUNDIG | CUC6310 | No east-west | Check r569, tda8145, d566 | ||
| GRUNDIG | T55-731 CUC7303 / FET TYPE | Dead bridge and chopper transistor s/c | If no d663 fitted this is version 2 has fet and uc3843. failure of p.s components caused by c669 dry jointed. check/change fet buz90, d667 ba157, r661 4.7k not 220r version 1, r666 and r667 56r 1w, r663 10r and the uc3843. all values for 20" | ||
| GRUNDIG | M82-795 CUC7880 | Dead, 800ma fuse blown | Check for dry joints on the chopper transformer also check d663, d664, d666, c653 4.7nf and c667 2.2uf | ||
| GRUNDIG | CUC5350 | Goes to standby after a short time | Replace c631 1uf, 63v | ||
| GRUNDIG | VS920 | No remote control operation or modulator output | Unlock the video with code 4934 + ok. check if you have the remote control set on video 1. when you have the rp 95 remote you can set the remote to video 1 with code 8527 + ok |