Read LG 47LH30 (CHASSIS:LA92A) Service Manual online
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LG Electronics. Inc. All right reserved.
C
2009
8. All Source Audio
Make sure you
can t hear any audio.
OK
Check Mstar
AUDIO_MASTER_CLK
R603
NO
Replace Mstar(IC100)
or Main board
OK
Check Mstar I2S Output
R604, R605, R606
NO
Check signal line
Or replace IC100
OK
Check IC500 Power
24V, 3.3V, 1.8V.
NO
Check Regulaor
IC601.IC704
OK
Check Output Signal
P600 1,2,3,4 PIN
NO
Replace NTP(Audio AMP)
IC500
OK
Check Connector & P600
NO
Replace connector
if found to be damaged.
OK
Check speaker resistance
and connector damage.
NO
Replace speaker.
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