Read LG 42LV3500-DG (CHASSIS:LT01M) Service Manual online
4. AV Video
Check input signal format.
Is it supported?
Check AV Cable for damage
or open connector
Check JK1604 , JK9903
CVBS Signal Line
R246 , R4016
ok
ok
ok
No
Replace Jack
5. Component Video
Check input signal format.
Is it supported?
Check Component Cable
for damage or open connector.
Check JK1601/JK1603
Y/PB/PR signal Line
ok
ok
ok
No
Replace Jack
ok
Check CVBS_DET Signal
Replace R1660 or R1666
No
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
No
Check COMP_DET Signal
Replace R1612 or R1615 or R1613,R1614
No
Check Mstar LVDS Output
Replace Mstar(IC100) or Main Board.
ok
No
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