Daewoo SD-8100 Service Manual
Also see for SD-8100: Owner's manual
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12TROUBLESHOOTING3. VIDEO circuitEE screen doesn’t appear.Is Video signal input at IC301pin#48,50,52,54?Is 5V obtained at IC301 pin#24,42, 55, 72, 91?Is signal input at IC302pin#1,5,12,13,14,15?Check LINE JACK and IF circuit.Check DVD circuit.Check POWER 5V.Check LINE JACK and IF circuit.Check DVD circuit.NOA. EE screen doesn’t appearYESNOYESNOYESNOYESNOYESNOYESNOYESYESNOIs signal input at IC601 pin#50? Check PCB Pattern.Is signal output at IC302 pin#3? Check IC302 pin#16VCC. CheckIC302 pin#9,10,11(control DC)Is signal output at IC601 pin# 52? Check IC604 pin#3(C sync).Is signal output at IC301pin# 62, 63?Check VCC of IC301 andpin #68,69.Check RF Output. Check LINE.Is signal input at IC301 pin# 56?YESCheck PCB Pattern.NO |
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