LG 50PM4700 Service Manual page 44

5. Component Video Trouble Shooting
Check Signal Format
Is it supported signal?
Y
Check Component Cable
Y
Check Component JK501/JK503
Y
Check Component Signal
R507/R520/R523/R532/R534/R550
Y
Check Component Signal
C257/C216/C212/C224/C223/C219
Y
Maybe BCM2112 (IC100)
has problems
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Only for training and service purposes
N
Replace Jack
Replace one of
N
R507/R520/R523/R532/R534/R550
& Recheck
N
Replace it
LGE Internal Use Only