LG SJ3 - Basic Operational Controls; USB Music Playback Controls

3-2
ONE POINT REPAIR GUIDE
1. NO POWER PROBLEM (PVDD)
No power problem occurs when you power on the unit.
1-1. Solution
Replace SMPS board.
1-2. How to troubleshoot (Countermeasure)
1) Check the PVDD voltage 24.5 V at pin4, 5, 6.
When you check the no power at this point, then replace SMPS board.
1-3. Service hint (Any picture / Remark)
< MAIN board top view >
< PVDD circuit >
PVDD
PVDD
CN601 pin4, 5, 6
CN601 pin4, 5, 6