Histórico de "Why is my OP-1 not turning on?"

I have been storing my OP-1 and using it since 2013. The other week it stopped turning on; currently, when I flip the power switch, I hear the power get to the speaker but the screen does not glow at all. Is this a screen issue, ui issue, or is it something else? It has turned on previously but it only works after I perform a firmware update or sparingly at any other time.

Dispositivo:

Teenage Engineering OP-1

Status:

open