Read LG 22LT560C (CHASSIS:LA2AA) Service Manual online
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10. AV Audio
11. External Speaker Out
Check AV Cable for damage
for damage or open conductor
Check JK1604 Signal Line
R1158,R1156
ok
ok
No
Replace Jack(JK1122)
Follow procedure
‘8. All source audio’
trouble shooting guide.
ok
ok
Check Output Signal JK5801
8, 3, 4, 5 pin.
Replace Phone Jack(JK5801)
ok
No
Check JK5801
Replace Phone Jack
if found to be damaged.
ok
No
Check External Speaker
Replace External speaker.
ok
No
Check AMP IC(IC5802) Power 5V
L3322
No
Replace L3322
Check AMP IC(IC5802) Output
2,12,14, 24 Pin
No
Check signal line. Or replace AMP IC(IC5802)
Check Mstar External AUDIO output
R5818, R5822
No
Replace Mstar(IC101) or Main Board
.
ok
Check AMP IC(IC5802) Mute High
R1817, 15pin
No
Check signal line. Or replace Mstar(IC101)
ok
Check OP AMP IC(IC5801) output
R5818,R9827
No
Replace R5818,R9827 or IC5801
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