Product review (5 stars): I don't have to buy a new dryer after all.
I searched the web and found a video on YouTube on what might be wrong with my dead dryer. The professional repairman led me to search for parts on-line. I discovered the parts  I needed posted on Amazon. It was the part I needed to keep my tenants happy. The service from Amazon was terrific; since I am new to buying parts on-line, and did so with a measure of hope that I was doing the right thing.