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Thanks..it would be great advice.
I will take this oppurtunity to ask another question...I have Panasonic DVD+VCR combo player,model NV-VHD1,it runs in 110VAC Mains...problem in Power Supply Section{SMPS}There's a blown resistor connected in one pin of switching transistor{FS5KM-10} in primary HV...I cant identify it..and I try to replace some 100 and 150 ohms but the voltage passing the output of photocoupler is only +1.5vdc instead of +5vdc.