Read LG 60PG30F-UA / 60PG30FC-UA (CHASSIS:PU84C) Service Manual online
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TROUBLE SHOOTING GUIDE
All Source Audio Trouble Shooting
Make sure you cant hear any audio
Check Signal
L919, L920
Replace it.
Check Signal
L509, L510, L511, L512
Y
N
Check IC502 Power 16V, 3.3V, 1.8V
Re-check
Y
N
Y
Replace it
N
Check Connector
JK501
Y
Check Mstar I2S Output
R1035, R1037, R1038
Y
Replace it.
N
Replace connector
N
Check speaker
Y
Replace speaker
N
Maybe NTP3000A has problems. Replace it
Y
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