Quastion about the screen mk1

Hello. i am about to sell my Octatrack mk1 and I am little bit worried not everything is ok with it. I am allways a little bit paranoid when selling gear.

I wonder most about the screen. I not really sure if it always been like this or if its normal.

When I edit a sound is comes a lot of shadows when I zoom in. I can se the sample in the background getting smaller or bigger in steps like a shadow behind it… Do you understand what I mean?

Is that normal? Im not sure either if the screen is dark enough like is more light gray.

Is it something wrong with the screen? Can I test it in some way to make sure?

Anybody out there? how does your screen look like?

Probably best to post a pic or video?

If its specific to that one function is unlikely to be hardware… And given the stability of the os not software either… I think I’m saying its unlikely a fault, more an idiosyncrasy, but as darenager says… Post a pic

Thanks for the replies. Maby it is just in my head but I create a video later.