Roland hp-337e display issue

Hello, I have a wonderful Roland hp337e digital piano which I bought second hand a few months ago. It works great, however I recently noticed thet as soon as I power it on, the LED display flashes in some sections, but not others. It doesn’t affect the sound or anything, it’s just a bit annoying. The issue started gradually, but it’s now pretty much constant. I can provide a video if needed.
Is there any hope? Is it economical to try and fix it?

Thank you very much!

Giacomo

Happy days, problem solved!
I inspected the logic board and noticed a couple of flex cables (see picture). I very carefully re-seated them, and the problem was gone! No more blinking of the display.

Video of the issue: