Unhook the the wires from the outlet and see if the volts come back up! Does the USB adapter use the same outlet as your TV? you may have a problem with the adapter? If that is all good then you probable have a short some wears on the white and black wiresfun part is finding wear it comes from you can use a tone generator or just try to trace it down.
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Bob & Carol Washington St
2017 HC HM352RL 2018 Dodge 3500 laramie CC LB 4x4
Curt Q25 with puck system, Factory air bags
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