hmm. this sounds odddly quite a bit like the 3's when they just decide to "Die".
I would just put it back in the box and send it back,
It "reads" like it is highly unlikely to be as a consequence of your actions.
Thus item unfit for purpose, thus return.
See what customer sevices say. On the MOUNTAN of P/w's that got returned for "bad screens" your little device won't even make a tiny blip