2-4
ONE POINT REPAIR GUIDE
3. IF THE SET DOESN’T BOOTING WHEN YOU TURN ON THE SET.
3-1. IC301 (NO VCC_5V)
3-1-1. Solution
Replace IC301 on MAIN board.
3-1-2. How to troubleshoot (Countermeasure)
1) Please check 5.1 VA of IC301 pin1 (VIN).
2) If 5.1 VA is abnormal, follow the stage 2-1 (IC304).
3) If 5.1 VA is OK, check PWR_CTRL (R314).
If it is not high state, follow the stage 8-1 (IC100).
4) If it is high state, please replace IC301.
3-1-3. Service hint (Any picture / Remark)
< MAIN board top view >
IC301
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