Read LG 22LG3DDH (CHASSIS:LA96E) Service Manual online
8. All Source Audio
Make sure you
can’t hear any audio.
↓ OK
Check Mstar AUDIO_MASTER_CLK
R606
→
NO
Replace Mstar(IC100)
or Main board
↓ OK
Check Mstar I2S Output
R604, R605, R606
→
NO
Check signal line
Or replace IC100
↓ OK
Check IC600 Power
24V, 3.3V, 1.8V.
→
NO
Check Regulaor
IC601.IC3001
↓ OK
Check Output Signal
P1400 1,2,3,4 PIN
→
NO
Replace NTP(Audio AMP)
IC600
↓ 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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