Microwave won't heat. Okay, we have the same problem as a few of your other posters. The

Question

Okay, we have the same problem as a few of your other posters. The microwave won't heat...it is 7 years old. Old, yes, but used 3 times a week at best. I know your previous responses mentioned something about the door switch. My my microwave seems to make a little different sound. At first, it sounds normal, but within a few seconds, it sounds like the fan has come on. Regardless...still no heat.

Thoughts?

Thanks1!