Read LG 50PG2HD-UA (CHASSIS:PU84A) Service Manual online
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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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