All kinds of crazy issues. The control lock locks by itself sometimes. And it unlocks itself sometimes. Some of the lights on the led are dim sometimes. Sometimes none of the lights will come on at all. The pause / cancel button works sometimes, sometimes it dont. The thing beeps sometimes, for no reason.
Once you get it started, if you can, it runs fine other than the beeping. You might be able to pause or cancel it, you might not.
Control board or bad touch panel?
Everything is intermittent. You have no idea at what point or time something will or will not do something.
I'm thinking most likely it's the control board.