LG BH9530TW Service Manual page 131

ONE POINT REPAIR GUIDE
NO POWER PROBLEM
No power problem occurs when you power on the unit.
1-2. PVDD (36 V) abnormal
1-2-1. Solution
Replace D951, IC901.
1-2-2. How to troubleshoot (Countermeasure)
Case 1) PVDD (36 V) abnormal: Check and replace it.
Case 2) If case 1 is not problem: Check IC901 and replace it.
No Power
D951 is Defective
S/W Error
1-1-3. Service hint (Any picture / Remark)
D951
IC901
< SMPS board top view >
5-4