LG S94T1-S Service Manual page 66

ELECTRICAL TROUBLESHOOTING GUIDE
No 1.2 V (VCC1.2V) DSP IC
YES
Is the
VCC supplied to IC405
pin3?
YES
Check IC405 and replace.
No 5V_SYSTEM (VCC_5V)
YES
Is the
VCC supplied to IC152
pin2?
YES
Is there
signal at IC152
pin1?
YES
Check IC152 and replace.
NO
Check IC155 pin6 (VCC_3V3).
NO
Check 6 VA on SMPS board.
NO
Check IC100 pin68 (LDO_CTRL).
2-51