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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: 4
B & O
3866
Field - small with lines
Replace C44,45,47 and C49 also IC2 TDA2170
14-09-04
B & O
3866
St/by only
s/c loptr Tr11 S2000A3, dry joints C34 6n8 etc
14-09-04
B & O
L2502 (
3866
)
Dead & squealing
Resolder a mass of dry joints on the PSU & line output panel then replace the short circuit line output transistor (TR11) S2000A3.
14-09-04
B & O
L2502
3866
Int starting , chopper drive present. If pin 3 IC1 , LM358 low check R14 & R16 , 220k.
If still no go , check TR20 on Tuner IF PCB .
14-09-04
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