Product review (5 stars): Fixed the problem!
Bought this for my GE HVM1540SP1SS microwave. When started, the timer would count down, but no spinning/heating would occur. After some checking around, it seemed the lower switch where the door connects was the problem. This part fit perfectly, and now the microwave works. It took about 5 minutes to take apart the microwave and swap the new switch for the old one. This was a much cheaper repair than paying a technician to come out and do it!