LG BD390 Service Manual page 63

4. THE DISC TRAY DOESN'T WORk. (BD300 / BD390)
When you turn on your BD300, it will doesn't work Disc tray
4-1. Solution
Replace IC154 on SMPS board.
4-2. How to troubleshoot (Countermeasure)
1) Check all Voltage in SMPS..
2) 12 Volt become 7 Volt.
4-3. Service hint (Any picture / Remark)
COMPONENT REPAIR GUIDE
3-50
Become 7V or
not output.
To loader and
video IC power.