Complete but temporary death (by 3 users)

My Panasonic over-the-counter microwave oven went completely dead this morning. It is under warranty so I went to the Panasonics website where I learned that this model does not exist. This being despite the fact that I had the operations manual in my, now grubby, little hands. I suspected a fuse, but why should I deal with it if it is under warranty? Since the website told me this model does not exist, I called the help line and was given a number of a TV repairman in Bakersfield who, they claimed, would do the work under warranty. I called; they won't. In fact they don't even work on microwave ovens at all. I called Panasonic again. After sufficient frustration communicating with a computer that apparently speaks English but doesn't understand any of it unless you scream, I reached Jane.... Hi Jane... I didn't mean to yell.... didn't know I was now talking to a human. After Jane learned that I had just called a few minutes earlier she asked for the service number that the first person should have given me. The first person hadn't. In fact, Jane could find no record of the call that I had made just minutes before. Jane gave me another phone number for a repair service that is about 120 miles from Bakersfield. It wasn't until after I hung up that I realized that the service number that Jane indicated I should have received at the first contact... she didn't give me either.

I called this place 120 miles away. They don't answer their phone at normal hours. I didn't want to wait a couple of days for what is surely a fuse (no interior lights, no above oven lights, no fan, no panel illumination.... yes I checked the power supply with a plug-in nite light.

So I turned to your website to find out where I might locate the fuse. Thank you. Now here's the weird thing (weirder than Panasonic not knowing they had this model). I tested the fuse with my OHM meter and found it to be dead before I removed it. After I had it removed, I checked it again with different results. I don't know what made me decide to check it again, but I now I will include this as an 'always do' in the future. I put it back into the microwave and it worked?!?!?

Got any eplainations? Not for Panasonic not knowing they have this model (don't think anybody could explain that one), but for a fuse that apparently heals itself?