LG LX-D2560A Service Manual page 19

I POWER AMP PART CHECK
P7905 3 PIN+12 13,14,15
PIN 32V
YES
Check input power of
eachIC700,701,702,703
34,29,26,21 PIN.
YES
Check input power of each
IC 700,701,702,703
1,36,17,18,19 PIN +12V
YES
Check PWM MODULATOR
input of each IC 4,6,14,16
PIN
YES
Check POWER IC 700,701,
702,703 34,29,27,20 PIN
output.
YES
Check output LINE COIL
YES
OK
NO
Refer to SMPS
Troubleshooting
Check resistance power of
each LINE
NO
IC700:R702,701,726,727,724
IC701:R730,729,750,753,752
IC702:R756,755,768,771,770
IC703:R774,773,794,797,796
NO
Replace the related parts
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