Hello, I purchased a Bosch HMV3051U Microwave on 2/3/11. The microwave is not heating but the clock, fan, turntable, and interior lights all work. There are no abnormal sounds or any other abnormal audible indicators. I think it is important to add that the microwave is sharing a 20A circuit with our refrigerator. This was the handy work of the previous owner (which I did not realize) however they previously had a Whirlpool microwave that worked fine for 17 years with this arrangement (although the Whirlpool was a 800W, 13A micro). In any case those are all the details. Thought the electrical arrangement may have blown an internal fuse. The breakers did not trip either. Any help would be greatly appreciated.