Read LG 60PG30F-UA (CHASSIS:PU84C) Service Manual 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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