60PV250-UB (CHASSIS:PU14K) - LG TV Service Manual (repair manual). Page 56
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Check USB 2.0 Cable for damage or open
conductors
Check L703 voltage level 5V
Y
N
Replace L703
Check JK702
Replace JK702
Y
N
Replace Mstar IC
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)
Check IC701
N
Replace IC701
Y
USB Audio
Trouble Shooting Guide
Download LG 60PV250-UB (CHASSIS:PU14K) Service Manual (Repair Manual)
Random:
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LBT-A57CD, LBT-A57CDM, LBT-A67CD, LBT-A67CDM, LBT-A77CD, LBT-A77CDM, LBT-D509CD, LBT-D559CD, LBT-D609CD, LBT-D709CD, LBT-D759CD, ST-D709
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MX-DE22, MX-DE23 (serv.man3)
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LC-46LE811E (serv.man20)
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PT-EZ770Z, PT-EZ770ZL, PT-EZ770ZD, PT-EZ770ZLD, PT-EZ770T, PT-EZ770TL, PT-EW730Z, PT-EW730ZL, PT-EW730ZD, PT-EW730ZLD, PT-EW730T, PT-EW730TL, PT-EX800Z, PT-EX800ZL, PT-EX800ZD, PT-EX800ZLD, PT-EX800T, PT-EX800TL (serv.man2)