Dryer Stopped Producing Heat

It is necessary to remove the dryer vent hose, the top and back of the dryer. The repair is easy, but awkward: In this model the thermal fuse is almost at the front of the dryer, so I repositioned the dryer so that I could lie on the floor and reach to the front (beneath the drum) with both hands.

My process for making a provisional diagnosis for the problem was pretty simple: The dryer had no error messages associated with the lack of heat, and there was no odor that might be associated with a part burning out. As the thermistor is solid state, I expected that a part called a "one time use thermal fuse" was almost certainly going to be the cause of the problem. Sure enough, it was.