Read LG 50PM4700-DA (CHASSIS:PB22A) Service Manual online
Check video output
Y
Follow procedure All source audio
trouble shooting
N
Y
Check EDID Pull-Up Voltage
Maybe BCM2112audio block has
problems. Replace it
N
Follow procedure HDMI video
trouble shooting
N
Replace one
R604/R606/R618/R620/R619/R621/R
605/R607
& Recheck
N
Check DDC Line
Replace one
R614/R615/R616/R617/R627/R629/
R632/R633/R634/R635
& Recheck
Y
13. HDMI Audio Trouble Shooting
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