LG S94T1-S Service Manual page 132

NO SOUND
Wireless rear speaker doesn't output a sound.
2-3. RIC307 (No 3.3 V)
2-3-1. Solution
Replace RIC307 (No 3.3 V).
2-3-2. How to troubleshoot (Countermeasure)
PWM 3.3 V
(RIC307 pin4)
output
YES
Check module
or connection.
2-3-3. Service hint (Any picture / Remark)
RIC307
ONE POINT REPAIR GUIDE
NO
(RIC312 pin2)
Replace RIC307.
< AMP board top view >
5 VA
NO
output.
YES
5-7
Check SMPS board
(PVDD).