A quick internet search revealed that others had solved this issue by replacing the membrane switch, which I found for a great price on this site. Repair took about an hour, as I had to be careful removing the aluminum cover so it wouldn't bend. Other than the tedious work of separating the parts on the door to reach the old membrane switch, this repair is relatively easy. (Ladies, don't be intimidated by this type of repair- I am female and it is completely doable).