LG 50PG30F-UA (CHASSIS:PU84C) Service Manual ▷ View online
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TROUBLE SHOOTING GUIDE
Analog TV Video Trouble Shooting
Check RF Cable
Check CVBS signal
TU400 #16 Pin
Maybe Tuner(TU400) has problems
Check CVBS signal
C112
Y
N
Check Tuner 5V Power
IC703 #5 Pin
Replace it
Y
N
Y
Replace it
N
Y
Maybe Mstar(IC100) has problems
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TROUBLE SHOOTING GUIDE
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TROUBLE SHOOTING GUIDE
Component Video Trouble Shooting
Check signal format
Is it supported?
Check signal
C833, C834, C835, C838, C839, C840
Replace it.
Check signal IC601 output
R631, R632, R633
Y
Y
N
Check JK602 / JK603
Replace connector
Y
N
Y
Replace it
N
Maybe Mstar(IC100) has problems
Y
Check Component Cable
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TROUBLE SHOOTING GUIDE
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