Read LG 60PT100C-WA / 60PT100N (CHASSIS:PC11A) Service Manual online
Make sure you can’t hear any audio
Y
Check Connector P700
N
Y
Y
Check External Speaker
Replace Connector
Check Signal
L700, L701
N
Replace one of
Capacitor, Register
& Recheck
Y
Check IC700 Power
17V, 3.3V
L702,L703
N
Replace It & Recheck
Y
Check Mstar S7 I2S Output
R724, R725, R726
N
Replace It & Recheck
Y
Maybe Mstar S7(IC101)
has problems
Replace Speaker
N
N
Maybe TAS9709 has problems.
Replace It
9-11. All Source Audio Trouble Shooting
Click on the first or last page to see other 60PT100C-WA / 60PT100N (CHASSIS:PC11A) service manuals if exist.