LG 42PM4700 Service Manual page 50

7. AV Video Trouble Shooting
Check Signal Format
Is it supported signal?
Y
Check AV Cable
Y
Check Jack JK501/JK503
Y
Check CVBS Signal
R507/R550
Y
Check CVBS Signal
C514
Y
Maybe MTK5369 (IC100)
has problems
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Only for training and service purposes
N
Replace Jack
N
Replace one of
R507/R550
& Recheck
Replace one of
N
C514
& Recheck
AV2_CVBS
AV1_CVBS
720 X 480 (i)
Dot Freq : 13.5 MHz
H - Freq : 15.734 kHz
V – Freq : 59.939 Hz
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