LG SL8YG Service Manual page 58

POWER ON ERROR
Fundamental power check points.
1-3. 3.3 VA
1) Check 3.3 VA at pin1 of WIC703.
2) Check 3.3V_PWM at pin6 of WIC703.
3) 1), 2) is NG  Replace WIC703.
If you can't check PVDD voltage, then replace the PCB board.
W C 6 2 0 W C 6 2 1
W C 6 1 3
W C 6 1 2
W C 6 1 0
W R 6 0 9
W R 6 0 8
W R 6 0 7
W R 6 0 5
W R 6 0 6
W R 6 0 1
W R 6 0 2
W C 6 0 3
W C 6 0 1
W C 6 0 2
WIC703 WIC703
W C 7 7 9
W C 7 7 1
W C 7 7 5
W C 7 0 9
W R 7 2 6
ONE POINT REPAIR GUIDE
< Woofer SMPS & AMP board bottom view >
W R 7 2 2
W R 7 2 4
W R 7 0 1
W R 7 0 0
W C 7 5 9
W R 6 4 2
W R 6 4 1
4-5
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W P W 9 0 1
Only for training and service purposes.