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Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 534
GrundigCUC3400No chan change when cold - display changes ok tho'Dry joint pin 15 tuner/if socket14-09-04
GrundigCUC3400No soundC266 1000µ 25v s/c; R367 8R2 safety res o/c14-09-04

GrundigCUC3400No start up - ticksC653 4n7 connected to pin 15 of power chip u/s14-09-04
GrundigCUC3400No start up with tickingHT at chopper coll - C653 4n7 connected to pin 15 power chip u/s14-09-04
GrundigCUC3400Poor purity & focus.C433 ( 1 , 000uf , 25v )14-09-04
GrundigCUC3400Poor R/C responseR1212 33R missing in sensor pcb14-09-04
GrundigCUC3400Startup - No s/up - ticking from transformer.C653 ( 4.7nf ) connected to pin 15 of IC.14-09-04
GrundigCUC3400trippingset ht pot R63714-09-04
GrundigCUC3400Tripping comes on if adj line frequency down.C653 ( 4.7u f )14-09-04
GrundigCUC3490Deado/c HT fuse; s/c chopper tr; sus dry joints pin 5 of daughter pcb14-09-04
GrundigCUC3490Dead - chopper tr s/c & fuse o/cC667 2µ2 (2 caps) dry joints or low cap14-09-04
GrundigCUC3490Dead - chopper tr s/c, HT fuse o/cDry joints pin 5 daughter board14-09-04
GrundigCUC3490dead no line drive or htTR651 mains tfmr pins 1-15 o/c, pins 15-17 s/c14-09-04
GrundigCUC3490Field fault - non lin with top missingPin 2 field chip only 12v (24v) C411 1000µ 50v supply smoother u/s14-09-04
GrundigCUC3490Field non linC411 1000µ 50v supply to fop chip leaky14-09-04
GrundigCUC3490No pic - sound okCheck A1 volts present on crt base - if not sus leakagein socket14-09-04
GrundigCUC3490No soundTDA4480 sound chip14-09-04
GrundigCUC3490No soundTDA448C IC sound chip14-09-04
GrundigCUC3490No soundR367 o/c & C366 s/c (audio o/p stage supply)14-09-04
GrundigCUC3500DEAD HT LOW AT 80v ( 196v )D635 SC14-09-04
GrundigCUC3500No sound/vis - +C volts low at 80v instead of 196vD635 BAT86 s/c14-09-04
GrundigCUC3500NO SOUND-VISIONCHECK D635 ( BAT86 ) SHORT14-09-04

GrundigCUC3600breathes with brillTripler/focus unit u/s14-09-04
GrundigCUC3600Broad white vert bar & SECAM light onBU508A LOPTr overheating. TDA8140 chip faulty - driving it at twice freq14-09-04
GrundigCUC3600No pic - dim vert bandCheck loptr base wfm - if low or twice normal speed check C507 100µ & IC550 TDA814014-09-04
GrundigCUC3600No pic - pic blankedCheck supplies & sandcastle pulse. Brill & contrast cont volts at pins 2 & 16 TDA8442 IC350 - if low & won't increase TDA8442 is sus14-09-04
GrundigCUC3600No picture - EHT Ok.If pins 2 & 16 do not increase if brit/cont is adj IC350 TDA8442.14-09-04
GrundigCUC3600NO PICTURE JUST DIM VERTICAL BAND ON SCREENC507 100uF OR IC550 TDA814014-09-04
GrundigCUC3800Dark on left, bright on RH sideC2582 1µ faulty - lum signal decoupler to pin 15 TDA3505 chip 14-09-04
GrundigCUC3800EW fault aft tripler replacementR571 4R7 & IC555 E/W chip14-09-04
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