LG LHB675FB Service Manual page 62

ELECTRICAL TROUBLESHOOTING GUIDE
No 1.5 V / 1.2 V
YES
Is the VCC supplied
to IC151 pin9 or pin22?
YES
Is there signal
at IC151 pin2 or pin3?
YES
Check IC151 and replace.
No HDMI_5VA
YES
Is the VCC supplied
to IC152 pin1?
YES
Check IC152 and replace.
NO
Check 5.5 VA on SMPS board.
NO
Check IC101 pin24 (DC15_12_CTRL).
NO
Check 5.5 VA on SMPS board.
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