I noticed the fan behind the freezer wasn't turning on. Googling this led me to appliancepartspros.com and some YouTube videos on replacing the fan. I got the model number of the Maytag, put it on their website, identified the evaporator fan, and ordered a replacement. It only took a day to arrive since one of their warehouses is 20 miles from my house. It took about 45 min to install the new fan and button things up. My 9-year-old refrigerator is back up and running. Of course, the whole project took several hours since I had to diagnose the problem from scratch, empty out the refrigerator, reinstall the new part, put all the food back in, and clean things up. I also vacuumed the coils and cleaned underneath the refrigerator while I was at it. Before replacement, the thermostat was set at 3.5 (3 is recommended), and now it's set at 2, which is an improvement.