My KitchenAid refrigerator was not cooling, but the freezer was working perfectly. The help section here listed three parts that could be defective–defrost thermostat, evaporator fan motor and blade, and air diffuser/damper control–so I replaced them all. The videos were EXCELLENT, and despite the difficulty I had squeezing my shoulders into the small freezer compartment, I installed the parts and my refrigerator is cooling perfectly! THANK YOU FOR THE EXCELLENT REPAIR VIDEOS! I am so happy that I was able to repair the refrigerator myself and save a lot of money in the process.