The knob has been working intermittently for several years. Unable to set an accurate time or temp or anything else for that matter, but I was fine just using the 30 second button. It would cost nearly as much as a new microwave to get it fixed. After a recent power failure, I discovered that the knob is not working at all. And if you can't set the time, the microwave is a boat anchor; keypad is locked. Brilliant piece of engineering.

Anyone have any tricks to get this working again so I can at least use the 30 second button?

Thanks.