LG LAS855M - If the Set Doesnt Booting When You Turn on the Set

2-3
2. IF THE SET DOESN’T BOOTING WHEN YOU TURN ON THE SET.
2-1. IC304 (NO 5.1 VA)
2-1-1. Solution
Replace IC304 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Please, check 25 VA of IC304 pin7 (VIN).
2) If 25 VA is abnormal, check the parts (MAIN board: L312, R367, CN104,
AMP board: F601, CN600, JK600). And change the weird one.
3) If 25 VA is OK, please replace IC304.
4)
If still there is no 25 VA, change adaptor. Or if 25 VA is OK, but 5.1 VA is abnormal at the L314, replace IC304.
2-1-3. Service hint (Any picture / Remark)
ONE POINT REPAIR GUIDE
< MAIN board top view >
IC304
IC304