Nothing displays on the control panel, microwave...

Question

I have a Jenn-Air built in unit with a mirowave on top. It was working fine and then all of a sudden the clock display turned off and nothing on the control panel works now. I checked the fuse it is fine. I checked the power source and its working. Never had a problem with the unit before. Need to know if replacing the control board would be a recommendation. Any other suggestions?

Thanks!