Nobody had this problem before?

Tonewheel ?

It shuts off by itself, and then tries to start again,
But only gets halfway through the statusbar before it shuts off again.
It does this off/on a few times before I manually flip the on/off button on the back,
so that it does not take permanent damage.

It was like this, both with 42b and now with 50A.

Is it software in relation to the midi error, or maybe the power distribution ?