8. Trouble shooting - No Audio (all audio source)
Check the TV Speaker Menu
(Menu -> Sound -> TV Speaker)
On
ok
ok
Check Output Signal P1702
1, 2, 3, 4 pin.
Replace Audio AMP IC(IC1702)
ok
No
Check Connector & P1702
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(IC1702) Power
*24V, 3.3V
No
Check Regulator L1709,L1710,L1711
Check Mstar I2S Output
R1754,5,6
No
Check signal line.
Or replace BCM( IC101)
Check AUDIO_MASTER_CLK
R1753
No
Replace BCM( IC101) or Main Board.
ok
Check AMP I2C Line
R1710,1711
No
Check signal line.
Or replace BCM( IC101)
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Summary of Contents for 42LK530
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