LG 50PG3HFD-UA (CHASSIS:PU84C) Service Manual ▷ View online
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HDMI Audio Trouble Shooting
Check video output
Follow procedure All source audio trouble
shooting
Y
Follow procedure HDMI video trouble
shooting
N
N
Maybe Mstar audio block has problems.
Replace it
Check EDID NVRAM (IC801, 802, 804)
Power & I2C Signal (#5, #6)
Replace it or re-download
Y
N
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USB Trouble Shooting
Check USB 2.0 Cable
Check L801 voltage level 5V
Y
N
Replace it
Check JK804
Replace it
Y
N
Check USB Device
If device is 2.5 inch HDD,
Do not connect, only upgrade
Y
Maybe Mstar has problems
Y
¥ Exception
- USB power could be disabled by inrushing current
- In this case, remove the device and try to reboot the TV (AC power off/on)
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