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[Chema]

Nothing has changed in my connections. Got this problem a couple of days ago. None of your solutions work. What am I suppose to do now?

[AvsGunnar]

@Chema 

Did you already try using a power adapter (5volt, at least 1 amp) like a cell phone charging adapter, at a wall outlet instead of the USB port on the TV if currently doing so?

If already using a power adapter, have you tried replacing both the power adapter and the micro USB power cable?