When that happens it’s not the screen but the board behind the screen and the whole assembly has to be replaced, something not practical for users to do. We can certainly fix it for you, just contact our service department or your dealer/distributor and we’ll get it handled.
No, as I mentioned it isn’t the screen. In fact, it can be software related too. Best to contact service and get a read from someone that knows more than me. It just could be something easily fixed without a hardware change.