LG SH7B - Connecting Additional Speakers to Home Network; Requirements and LAN Cable Connection

3-3
2. IF THE SET DOESN’T BOOTING WHEN YOU TURN ON THE SET.
2-1. IC300 (NO 5.1 VA)
2-1-1. Solution
Replace IC300 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)
1) Please, check 12 VA L304 of IC300 (VIN).
2) If 12 VA is abnormal, follow the stage 1-1 (IC302).
3) If 12 VA is OK, please replace IC300.
2-1-3. Service hint (Any picture / Remark)
ONE POINT REPAIR GUIDE
< MAIN board top view >
IC300
IC300