GRUNDIG TV Repair: Common Faults and Solutions.


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Search: GRUNDIG
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GRUNDIG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
GRUNDIGCUC3600
No pic - dim vert bandCheck loptr base wfm - if low or twice normal speed check c507 100µ & ic550 tda8140
GRUNDIGCUC3600
Broad white vert bar & secam light onBu508a loptr overheating. tda8140 chip faulty - driving it at twice freq
GRUNDIGCUC3600
Breathes with brillTripler/focus unit u/s
GRUNDIGCUC3500
No sound-visionCheck d635 ( bat86 ) short
GRUNDIGCUC3500
No sound/vis - +c volts low at 80v instead of 196vD635 bat86 s/c
GRUNDIGCUC3500
Dead ht low at 80v ( 196v )D635 sc
GRUNDIGCUC3490
No soundR367 o/c & c366 s/c (audio o/p stage supply)
GRUNDIGCUC3490
No soundTda448c ic sound chip
GRUNDIGCUC3490
No soundTda4480 sound chip
GRUNDIGCUC3490
No pic - sound okCheck a1 volts present on crt base - if not sus leakagein socket
GRUNDIGCUC3490
Field non linC411 1000µ 50v supply to fop chip leaky
GRUNDIGCUC3490
Field fault - non lin with top missingPin 2 field chip only 12v (24v) c411 1000µ 50v supply smoother u/s
GRUNDIGCUC3490
Dead no line drive or htTr651 mains tfmr pins 1-15 o/c, pins 15-17 s/c
GRUNDIGCUC3490
Dead - chopper tr s/c, ht fuse o/cDry joints pin 5 daughter board
GRUNDIGCUC3490
Dead - chopper tr s/c & fuse o/cC667 2µ2 (2 caps) dry joints or low cap
GRUNDIGCUC3490
DeadO/c ht fuse; s/c chopper tr; sus dry joints pin 5 of daughter pcb
GRUNDIGCUC3400
Tripping comes on if adj line frequency down.C653 ( 4.7u f )
GRUNDIGCUC3400
TrippingSet ht pot r637
GRUNDIGCUC3400
Startup - no s/up - ticking from transformer.C653 ( 4.7nf ) connected to pin 15 of ic.
GRUNDIGCUC3400
Poor r/c responseR1212 33r missing in sensor pcb