LG 50PX950, Service Manual, Page: 73 / 105

Customer Oriented R&D Breakthrough
9. All Source Audio Trouble Shooting
Make sure you can’t hear any audio
Y
Check Connector P700
N
Y
Y
Check Speaker
Replace Connector
Check Signal
L700, L701
N
Replace one of
Capacitor, Register
& Recheck
Y
Check IC500 Power
17V, 3.3V
L704,L703,L702
N
Replace It & Recheck
Y
Check BCM3556 I2S Output
R702, R703, R704
N
Replace It & Recheck
Y
Maybe BCM3556(IC100)
has problems
Replace Speaker
N
N
Maybe TAS5709 has problems.
Replace It