Summary: We bought this microwave JVM1540SM4SS along with the GE oven that matches it two years ago. Withing a few months the oven's control panel went out and had to be replaced. The shelf in the microwave had some sort of "metal" coating on it. The coating caught fire a year and a half in and had to be taken out. Just this week out of the blue the microwave stopped hearing and just blew air. We changed the fuse as that could have been the issue. It was not the fuse.
It broke after warranty, of course, but i fixed it myself
25 August 2014
Summary: I guess i'm the lucky one. My microwave lasted 3 years. I really love how it works and how it looks, but now it's having problems. I have diagnosed the problem myself and ordered parts. You can find repair videos on YouTube to help. My microwave would run by itself or wouldn't shut off. It's the door switch parts that are worn out. If your keypad doesn't work, then that is a $175 part.