Read LG 50PM4700-DA (CHASSIS:PB22A) Service Manual online
Y
Check Jack JK501/JK502
N
Y
Check Signal
C537/C538/C539/540/C541/C542
N
Check equipment / Replace Jack
Check Video Output
Replace one of
C537/C538/C539/540/C541/C542 &
Recheck
N
Follow procedure external input
video trouble shooting
Y
Follow procedure All source audio
trouble shooting
N
Maybe BCM2112 audio block has
problems. Replace It
12. Component / RGB / AV Audio Trouble Shooting
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