LG 60LB5900 - Audio Troubleshooting; All Source Audio Issues

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Only for training and service purposes
Check the TV Speaker Menu
(Menu -> Audio -> Sound Out -> TV Speaker)
On
ok
ok
Check Output Signal P5600
1, 2, 3, 4 pin.
Replace Audio AMP IC(IC5600)
ok
No
Check Connector & P5600
Replace connector
if found to be damaged.
ok
No
Check speaker resistance
and connector damage.
Replace speaker.
ok
No
Off
Toggle the Menu
Check AMP IC(IC5600) Power
24V, 3.3V
No
Replace Amp IC(IC5600)
Check Mstar I2S Output
IC5600 20,21,22 Pin
No
Check signal line. Or replace Mstar(IC101)
Check Mstar AUDIO_MASTER_CLK
IC5600 15 Pin
No
Replace Mstar(IC101) or Main Board.
ok
Check AMP I2C Line
IC5600 23,24 Pin
No
Check signal line. Or replace Mstar(IC101)
6. All Source Audio