8. All Source Audio
Check the TV Speaker Menu
(Menu -> Sound -> TV Speaker)
On
ok
ok
Check Output Signal P502
1, 2, 3, 4 pin.
Replace Audio AMP IC(IC501)
ok
No
Check Connector & P502
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(IC501) Power
*20V, 3.3V, 1.8V.
No
Check Regulator IC404
*20V Voltage is dependent on Model
26/32LD350 => 24V
19/22LD350 => 15V
Check Mstar I2S Output
R503, R504, R505
No
Check signal line. Or replace Mstar(IC101)
Check Mstar AUDIO_MASTER_CLK
TP502
No
Replace Mstar(IC101) or Main Board.
ok
Check AMP I2C Line
R506, R507
No
Check signal line. Or replace Mstar(IC101)
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