My son owns an HVAC business and is one of those people who can fix anything. He came to our house to replace the door gasket and noticed that the defrost timer wasn't cycling. When he left we had a new door gasket in place and a defrost timer ordered and being shipped. The repair was simple enough so when the part arrived I went and got it off a neighbor's porch ( thanks to FedEx) and swapped the part. I made sure the dial on the timer was moving after a couple of hours then slid the freezer back into place and we were back to normal.