LG FH6 Service Manual page 24

2. NO BOOTING WHEN YOU TURN THE UNIT ON, NO MESSAGE ON VFD
When you turn on your set, it will blank / no message on VFD, and it will not boot-up.
2-1. IC303/ IC302 (NO 3.3 VA /1.2 VA)
2-1-1. Solution
Replace IC303 or IC302 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Please check 3.3 VA of IC303 and 1.2 VA of IC302.
2) If 3.3 VA is abnormal, please check 4.8 VA of IC303 pin3.
If 1.2 VA is abnormal, please check 5.5 VA of IC302 pin3.
3) If 4.8 VA is OK, but 3.3 VA is abnormal, change IC303.
If 5.5 VA is OK, but 1.2 VA is abnormal, change IC302.
2-1-3. Service hint (Any picture/ Remark)
(SN1501019) (SN1501019)
< MAIN board top view >
ONE POINT REPAIR GUIDE
IC302 IC302
< MAIN board bottom view >
3-5
IC303 IC303
(TJ4310) (TJ4310)