LG S75A1-D User Manual

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 5.3 VA of IC301 pin2 (VIN).
2) If 5.3 VA is abnormal, follow the stage 2-1 (IC308).
3) If 5.3 VA is OK, check PWR_CTRL (R314).
 If it is not high state, follow the stage 9-1 (IC100).
4) If it is high state, please replace IC301.
3-1-3. Service hint (Any picture / Remark)
< MAIN board top view >
IC301
IC301

LG S75A1-D Specifications

General

Brand	LG
Model	S75A1-D
Category	Speakers
Language	English