Read LG 32LG50D (CHASSIS:LJ82A) Service Manual online
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Analog TV Video Trouble Shooting
Check RF Cable
Check CVBS sig nal
TU800 #17 Pin
Maybe Tuner(TU800) has
proble ms
Check CVBS sig nal
IC808 #8 Pin
Check CVBS sig nal
C658
Y
Y
N
Check Tuner 5V Po wer
IC804 #3 Pin
Replace it
Y
N
Y
Replace IC808 or ch eck L 800 5V
po wer
N
Replace it
N
Y
Maybe BCM3553(IC100) has
proble ms
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