Hi sorry you are experiencing this problem.
This is a main control board problem.
Unfortunately the only way to fix this is to replace that circuit board.
It is the same board that the display is mounted to.
Below is link to a company you need to call to see if they have that part, I know its not a cheap part though I wish it was.
This part may still be available, please check both links and call them they can tell you where you can get it if possible:-)
Since this may take some time AND I WILL HELP YOU WITH THE INSTALL if you will rate my service today as ok or better The system will allow me to schedule free follow ups with you so your question will not close or time out and we will be able to work together no matter how long it takes to solve this issue.