LG OM4560 Service Manual page 37

ELECTRICAL TROUBLESHOOTING GUIDE
No PVDD
YES
F901 normal?
YES
BD901 normal?
YES
TH901 normal?
YES
Is Vcc
(10 V ~ 18 V) supplied to
IC911 Pin4?
YES
Q901 normal?
YES
D951 normal?
YES
Is there about 2.5 V
at IC951 Pin1?
YES
Power line of main PCB is short.
NO
Replace F901 (Use the same fuse).
NO
NO
NO
R959, R960, R961, R963, R964 normal?
R959, R960, R961, R963, R964.
NO
NO
NO
3-20
Replace BD901.
Replace TH901.
NO
Check or replace
Replace Q901.
Replace D951.
Replace IC951.