Product review (5 stars): Worked like a charm!
Our dryer started working intermittently, and I finally figured out it was a defective door switch.  Replacement (at least on our dryer) was a cinch... remove two screws on the back of the top cover, slide the top cover forward and then off, remove two screws for the switch, unplug and replace.  A 5 minute repair, and much cheaper than a service call!