[TWA]

This Kenmore microwave worked fine for 4 years until yesterday. Now, when you open the door, the thing turns on, the platter turns, and it is microwaving. When you close the door, and it stops. If you need to cook food, it still works normally with the door shut - even turns off on time. But open that door, and it turns on again.

Obviously, this is not safe, because I think microwaves are escaping.

My initial impression is a circuit board malfunction. It almost acts like it needs to be reset - or rebooted as with a computer. I don't know how to do that, however, and unplugging the thing for a minute and plugging it back in does not make a difference.

Mechanically, the door opens and closes normally, and the latches look OK.

Please let me know any ideas on this odd problem. Such as, what parts might be at fault, and how to fix it.

Thanks,

TWA