Danny C Sugar Land , TX September 29, 2014 Refridgerator stopped cooling My refrigerator stopped cooling recently. The freezer was still cold, however. I noticed a lot of ice on the back wall of the freezer. That can mean that the defrost thermostat went out and is failing to keep that area from forming ice. First I unplugged the refrigerator and let the ice thaw. I removed the panel inside of the freezer, located the old defrost thermostat and replaced it. I ordered the part on this website and the parts arrived the next day! Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes