Read LG 60PM9700-TA (CHASSIS:PA22A) Service Manual online
Make sure you can’t hear any
audio
Y
Check Connector P800
N
Y
Y
Check Speaker
Replace Connector
Check Signal
L801, L802, L803, L804
N
Replace one of
Capacitor, Register
& Recheck
Y
Check IC800 Power
17V, 3.3V
N
Replace It & Recheck
Y
Check BCM2112 I2S Output
AR800
N
Replace It & Recheck
Y
Maybe MTK5369 (IC100)
has problems
Replace Speaker
N
N
Maybe STA368 has problems.
Replace It
9. All Source Audio Trouble Shooting
Click on the first or last page to see other 60PM9700-TA (CHASSIS:PA22A) service manuals if exist.