Thanks for the info. I have noticed that the electronic temperature display for the freezer section does vary 5-10 degrees from the actual temperature as measured by a digital thermometer. But I reasoned that the temp sensor for the display must be the one located at the bottom of the freezer compartment. I think I may replace the temp sensor located next to the thermostat because it probably palys a role in the defrost cycle and also the thermostat itself as long as I'm in there, the parts are reasonably cheap. I hope it is not the main board. We'll see. Thanks again.