LG SJ3 - Troubleshooting Common Issues; Unit Not Working Properly; No Power or Sound Issues; Woofer and Remote Control Problems

3-10
ONE POINT REPAIR GUIDE
9. B(BURNT) PROTECTION
9-1. Solution
Replace IC703 (AMP IC) on MAIN board.
9-2. How to troubleshoot (Countermeasure)
1) Check voltage 12 V of IC703 at pin1, if 12 V has problem, refer to “2. POWER ON ERROR” on page 3-3.
2) If 12 V is OK, replace IC703 (AMP IC) on MAIN bottom board.
9-3. Service hint (Any picture / Remark)
< MAIN board bottom view >
IC703
IC703