Power Supply On Smps Board - LG BP630 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE
No 13 VA
Check or replace D126, D130.

2. POWER SUPPLY ON SMPS BOARD

No 5.3 VA
Is F101 normal?
Is R101 normal?
Is D103 ~ D106 normal?
Is the V
(13 V~27 V) supplied to IC101
pin7?
Power line of MAIN board is short.
YES
YES
YES
YES
YES
CC
YES
NO
Replace F101 (same fuse).
NO
NO
Replace D103/ D104/ D105/ D106.
NO
Check or replace D102.
3-43
Replace R101.
Is D102 normal?
NO