Component Video - LG 42LK450 Service Manual

Trouble shooting guide
4. AV Video
Check input signal format.
Is it supported?
ok
Check AV Cable for damage
for damage or open conductor
ok
Check JK1604 , JK9901
CVBS Signal Line
- C227 , C405
ok
Check CVBS_DET Signal
ok
Check Mstar LVDS Output

5. Component Video

Check input signal format.
Is it supported?
ok
Check Component Cable
for damage or open conductor.
ok
Check JK1601 or 1603
Y/PB/PR signal Line
- C211/213/215/217/218/220/222/224
ok
Check COMP_DET Signal
ok
Check Mstar LVDS Output
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Only for training and service purposes
No
Replace Jack
No
Replace R9915 or R1666
No
Replace Mstar(IC100) or Main Board.
No
Replace Jack
No
Replace R1614, R4223 or R1615
No
Replace Mstar(IC100) or Main Board.
When the model is LK series,
Check JK1604, JK9903
LGE Internal Use Only