I did the job diagnosis myself but needed a new thermostat. The old thermostat is no longer made and I could not find what new part # I needed. McNabb's sold me a replacement part but was not even close as to the temperature range and my frig would never shut off unless I put it on a power bar. As to my research I did find a new part for my frig and McNabb did have the part which I did take. I asked if I could return the wrong part as only was installed for 6 days, and answer was a NO. They sell wrong parts and you can not return them for correct parts. Great Business decision to keep customers happy. So Bad Review.