Black screen on Remote

Hello!

I have a problem with the kemper remote,

my screen is black and it makes it impossible to use...

I bought a new original cable from Kemper, but it did not fixed the problem...

Is it a hardware problem? should I turned it back?

Thank You,
Johan.

Ok,...

I changed nothing to my setup and it seems to work again...

I'll let my kemper work the all day to see if it happens again...

and black again...