No Booting When You Turn The Unit On, No Message Or "Please Wait"On Front Panel - LG BH5140S Service Manual

ONE POINT REPAIR GUIDE
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 3.7 VA (yellow signal).
2) If 3.7 VA is abnormal, please check SMPS board.
3) If 3.7 VA is OK, but 3.3 VA is abnormal. replace D101.
2-1-3. Service hint (Any picture / Remark)
D101
A:3.7 VA
B:3.3 VA
< Main board top view >
2-29