display/control panel seems wacked out

I have a GE JES1142SJ 06 that doesn't have that much use. Problem is when i plug it in, a 0 shows up in far right display. The only button that seems to work is the "beverage" button.

after pressing the beverage button, it starts running and appears to be heating normally. If I open the door, the oven shuts off, but i cannot restart the heating cycle. none of the other buttons seems to work.

I can unplug it and plug it back in and get the beverage button to work again, but everything else is still useless.

it wasn't a real expensive mw, but bugs me that it only got a year or two of non-heavy use and has been sitting in my garage.