Booting When You Turn The Unit On, No Message Or "Please Wait"On Front Panel - LG BH4120SN Service Manual

2. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE OR
"PLEASE WAIT" ON FRONT PANEL
When you turn on your set, it will blank / no message or "PLEASE WAIT" display on front panel, and
it will not boot-up.
2-1. D101 (NO 3.3 VA)
2-1-1. Solution
Replace D101 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Please check 3.8 VA (yellow signal).
2) If 3.8 VA is abnormal, please check SMPS board.
3) If 3.8 VA is OK, but 3.3 VA is abnormal. replace D101.
2-1-3. Service hint (Any picture / Remark)
ONE POINT REPAIR GUIDE
< MAIN board top view >
2-29
B:3.3 VA
D101 D101 D101
A:3.8 VA