display screen is white and powers off and on by itself, radio too.

My touch display screen for the radio and back up camera was white when I entered the vehicle. I live in Michigan and he turned van on to warm it up. When I left, As I was driving, the screen and radio would power off and on every couple minutes. When it was on, screen would remain white and radio would play. I tried shutting the radio off, it wouldnt. It all shuts off when I exit the vehicle, so that’s good. When I turned it back on a few hours later it was fine. Concerned to have it keep happening though, and looking for suggestions. Thanks!