LG SH5B - Music Flow Bluetooth App Usage Notes; Sound Adjustment and Effects Settings; Setting Various Sound Effects Modes

3-8
ONE POINT REPAIR GUIDE
6. NO SOUND (USB)
6-1. Solution
Replace FL851 on MAIN bottom board.
6-2. How to troubleshoot (Countermeasure)
1) Please check externally status USB connector on your eyes. (at JK853)
2) Please check USB data signal at FL851 (signal D-, D+).
If you have not data signal, please replace FL851.
6-3. Service hint (Any picture / Remark)
< MAIN board top view >
JK853
JK853
FL851
FL851