LG LHD625 Service Manual page 53

ELECTRICAL TROUBLESHOOTING GUIDE
No PVDD (36 VA / 26 VA)
YES
Is the P-CTRL normal?
YES
Is the VCC
(11 V ~ 25 V) supplied to IC902
pin4?
YES
Is IC902 normal?
YES
Is Q951 normal?
YES
Is D981 normal?
YES
Power line of MAIN board is short.
NO
Check MICOM IC on MAIN board.
NO
Check or replace Q902.
NO
NO
NO
2-40
Is Q902 normal?
Replace IC902.
Replace Q901.
Replace D981.