LG 50PG30F-UA (CHASSIS:PU84C) Service Manual ▷ View online
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TROUBLE SHOOTING GUIDE
HDMI Video Trouble Shooting
Check signal format
Is it supported?
Y
Check J801 / J802 / J803
Replace connector
Y
N
Y
Check HDMI Cable
Check EDID NVRAM
(IC801, 802, 804)
Power & I2C Signal (#5, #6)
Replace it or re-download
Y
N
Check HDCP Key NVRAM (IC102)
Power & I2C Signal (#5, #6)
Replace it
Y
N
Check IC803 Out Voltage Level
3.3V
Replace it
Y
N
Check L802 Voltage Level 3.3V
Replace it
Y
N
Check IC803 Clock Signal
#26, #27
Replace it
Y
N
Maybe Mstar(IC100) has problems
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TROUBLE SHOOTING GUIDE
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TROUBLE SHOOTING GUIDE
All Source Audio Trouble Shooting
Make sure you cant hear any audio
Check Signal
L919, L920
Replace it.
Check Signal
L509, L510, L511, L512
Y
N
Check IC502 Power 16V, 3.3V, 1.8V
Re-check
Y
N
Y
Replace it
N
Check Connector
JK501
Y
Check Mstar I2S Output
R1035, R1037, R1038
Y
Replace it.
N
Replace connector
N
Check speaker
Y
Replace speaker
N
Maybe NTP3000A has problems. Replace it
Y
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TROUBLE SHOOTING GUIDE
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