Read LG 50PZ570B-SB (CHASSIS:PB12A) Service Manual online
Make sure you can’t hear any audio
Y
Check Connector P1600
N
Y
Y
Check Speaker
Replace Connector
Check Signal
L1600, L1601, L1602, L1603
N
Replace one of
Capacitor, Register
& Recheck
Y
Check IC1600 Power
17V, 3.3V
N
Replace It & Recheck
Y
Check BCM3556 I2S Output
R1605, R1606, R1607, R1608
R1605, R1606, R1607, R1608
N
Replace It & Recheck
Y
Maybe BCM35230 (IC101)
has problems
Replace Speaker
N
N
Maybe STA368 has problems.
Replace It
9. All Source Audio Trouble Shooting
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