LG SJ5 - Page 44

3-15
ONE POINT REPAIR GUIDE
PROTECTION ERROR
No display or No Sound.
3-3. B(BURNT) PROTECTION
3-3-1. Solution
Replace MAIN board.
3-3-2. How to troubleshoot (Countermeasure)
1) Check voltage 12 V of IC700, IC701 at pin1 ~ 2, if 12 V has problem refer to STEP 1-1.
2) If 12 V is OK, replace MAIN board.
3-3-3. Service hint (Any picture / Remark)
< MAIN board bottom view >
IC701
IC701
IC700
IC700