LG BD390 Service Manual page 62

3. NO POWER (BD300 / BD390)
No power problem occurs when you power on the unit.
3-1. Solution
Replace C124 on SMPS board.
3-2. How to troubleshoot (Countermeasure)
1) Check all of voltage.
3-3. Service hint (Any picture / Remark)
COMPONENT REPAIR GUIDE
C124
5V NoPower
IC152 are Defective
C124
3-49
5V NoPower
IC152 are Defective