Booting When You Turn The Unit On, No Message Or "Welcome" On Front Panel - LG S92T2-C Service Manual

ONE POINT REPAIR GUIDE
2. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE OR
"WELCOME" ON FRONT PANEL
When you turn on your set, it will blank / no message on front panel, and stand-by led no working.
2-1. IC101 (NO 3.8 VA & 3.3 VA)
2-1-1. Solution
Replace IC101 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Please check 3.8 VA of IC101.
2) If 3.8 VA is abnormal, please check SMPS 3.8 VA and D101 diode.
3) If 3.8 VA is OK, but 3.3 VA is abnormal, replace D101 diode.
4) If 3.8 VA, 3.3 VA is OK, check X101 crystal signal.
2-1-3. Service hint (Any picture / Remark)
X101
IC101
< MAIN board top view >
D101
< MAIN board bottom view >
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