LG S65T1-S Service Manual page 61

ELECTRICAL TROUBLESHOOTING GUIDE
No 5V_LOADER / W_5V
YES
Is the VCC supplied
to IC153 pin3?
YES
Is there signal
at IC153 pin1?
YES
Check IC153 and replace.
MIC_5V / USB_5V / VCC_5V
YES
Is the VCC supplied
to IC154 pin3?
YES
Is there signal
at IC154 pin1?
YES
Check IC154 and replace.
NO
Check 5.5 VA on SMPS board.
NO
Check IC101 pin57 (LDO_CTRL).
NO
Check 5.5 VA on SMPS board.
NO
Check IC101 pin57 (LDO_CTRL).
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