LG LHB675FB Service Manual page 60

ELECTRICAL TROUBLESHOOTING GUIDE
No 12 V
YES
Is the VCC supplied
to IC150 pin2?
YES
Is the VCC supplied
to IC150 pin1?
YES
Check IC150 and replace.
No A9P5V (9.5 V)
YES
Is the VCC supplied
to IC302 pin2?
YES
Check IC302 and replace.
NO
Check 14 VA on SMPS board.
NO
Check IC101 pin57 (LDO_CTRL).
NO
Check 12V_Loader (IC150) on MAIN board.
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