LG 50PJ350 Service Manual page 60

9. All Source Audio Trouble Shooting
Make sure you can't hear any audio
Y
Check Speaker
Y
Check Connector P703
Y
Check Signal
L700, L701
Y
Check IC700 Power
17V, 3.3V
L702,L703
Y
Check Mstar S7 I2S Output
R724, R725, R726
Y
Maybe Mstar S7(IC101)
has problems
Customer Oriented R&D
N
Replace Speaker
N
Replace Connector
Replace one of
N
Capacitor, Register
& Recheck
N
Replace It & Recheck
N
Replace It & Recheck
N
Maybe TAS9709 has problems.
Replace It
Breakthrough