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GRUNDIG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
GRUNDIGP37-071 CUC7303
Does not turn on, LED blinks, voltage on the primary is normal, on the secondary it oscillates between 130 and 150v, the TV is turned off and the charging voltage on the primary continues to be around 300vAnalyze c626=47uf/385
GRUNDIGMFW-6110/9 DVD - CUC1937
Starts, gives a boost and turns offReplace c 64001 and c 64002 ( placa dyn. focus )
GRUNDIGP37 2401TEXT CHASSI E1
Appears without synchronismC148 4700p no pino 17 do ic tda9345xx
GRUNDIGT 55 4201 CHASSI 12.6
With lots of light and return linesR 721 of 220r on the ctr board
GRUNDIGTVR 3730
Gives nothing. blown fuseR3337 open and d6314 shorted due to being shorted c2328
GRUNDIGCUC 2136M LEEMAXX
Dark imageD54005 6v8 with strong leakage as a result of s.frias in the e/o modulator module
GRUNDIGCUC 2136M LEEMAXX
Little amplitude. horizon.E/o module with solder. disabled in cond. + 3.9Ω r53072 + stv9306
GRUNDIGCH CUC3400
No colorSweat also r2533 470y
GRUNDIGELEGANZ 82 CUC1935
When switching on, red LED, then yellow, you hear an impulse from the mat but it goes into protection.C64001 1500pf/6kv with leakage. it is in series with c4002 of equal value. focus potentiometer was also damaged.
GRUNDIGCUC2058N
Does not start, the LED glows when pressing p+ or a key on the controlTriplicator bg-1899-022-644
GRUNDIGCUC2030
It has sound, it has OSD, it has no image. blue screen without signal and black with signalD57012 leaking. similar problem may be caused by d57011, d57013, ct57020 and 21
GRUNDIGCHASSI CUC6300
Distorted image, appears to be out of tuneWash the f.i. area with suitable product. touch up the f919 coil, this tuning is carried out without changing the fine tuning, place the tip of the osci. on pin 19 of the scart plug, tune until the oscillogram is as clean as possible
GRUNDIGMW70-100/8
R53021 burns systematically when startingSubstitute coil l 53021
GRUNDIGP37-070 - CUC7301
The/ image, and/ sound via rf, normal via scart.Ct840 (bc848)
GRUNDIGCHASSIS CUC6300
Without image, with osd, and in text versions, also teletextT277 bc548b leaks
GRUNDIGCUC5360
Does not capture VHF, captures UHF with little gainTda5931 intermediate frequency
GRUNDIGCUC7851
Wrong layout on the chassis - the printing of the d438 - zener zpd33 - on the soldering side it has the cathode for the ground, it's wrongWhen replacing the zener you will have to pay attention to its position
GRUNDIGCH CUC3400
Burns t661 but11a/12aC667 2.2uf 450v (in the mod that is electrolytic)
GRUNDIGCHASSIS G1000
Image with contours of the image "figures" with tracerySubstituir c. int do vertical tda8170
GRUNDIGM63-105/9 IDTV CUC1822
Every now and then it turns off. can work more hours at a timeTransfer. chopper, feedback section. of the defective primary. 29201-403.97 not yet available by hr. it has to be original