LG 42LK430 - Input Signal Troubleshooting; AV Video Issues; Component Video Issues

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4. AV Video
Check input signal format.
Is it supported?
Check AV Cable for damage
for damage or open conductor.
Check JK1604
CVBS Signal Line
R246.
ok
ok
ok
No
Replace Jack.
ok
Check CVBS_DET Signal.
Replace R1666.
No
Check Mstar LVDS Output.
Replace Mstar(IC101) or Main Board.
No
5. Component Video
Check input signal format.
Is it supported?
Check Component Cable
for damage or open conductor.
Check JK1601 or 1603
Y/PB/ PR signal Line.
ok
ok
ok
No
Replace Jack.
Check COMP_DET Signal.
Replace R1615.
No
Check Mstar LVDS Output.
Replace Mstar(IC101) o r Main Board.
ok
No