Read LG 37LG50D (CHASSIS:LJ82A) Service Manual online
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Analog TV Audio Trouble Shooting
Check v ideo output
Foll ow pr oc edure All s ourc e audio
trouble shooti ng
Y
Foll ow pr oc edure analog TV
video trouble shootin g
N
N
Maybe BCM3553 audio blo ck h as
problems. Rep lace it
Check L 801 voltag e level 5V
Replace it
N
Y
Check SIF sign al
C801 / C806 / Q800
Replace it
N
Y
Check SIF sign al
R652 / C665
Replace it
N
Y
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