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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
Make
Model
Problem
Solution
Date
Found: 6
Grundig
CUC
3850
Dead - HT present , no line & display corrupt
IC656 LM317 12v reg not turned on because IC850 micro SDA2080-A003 faulty. When replaced, tripler arcing - proved to be the cause
14-09-04
Grundig
CUC
3850
Dead - no line drive - 150v HT ok
No 12v at TDA8140 drive chip. R661 0R2 burnt out caused by D661 BYW72 leaky
14-09-04
Grundig
CUC
3850
Pic pulses at random
Poor contact plug to Aquadag on crt
14-09-04
Grundig
CUC
3850
St/by only
2SD1432 LOPTr T572 s/c due to s/c in TDA8140 line dr chip (Don't use BU508A instead of 2SD1432)
14-09-04
Grundig
CUC
3850
St/by only
Check setting of pre-set (standing bias for opto coupler) on vertical st/by panel
14-09-04
Orion
3850
Dead - psu blown up
psu chopper drive IC TEA 2262, mosfet STP480T, optocoupler TCDT1102G
14-09-04
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