This video from Sears PartsDirect shows how to troubleshoot problems when your refrigerator isn't cooling. There are a few different parts that could be responsible for the problem, including the automatic defrost system, the compressor, the evaporator fan or the thermistor.
We'll walk you through some simple tests to help narrow down the problem and provide links to more advanced tests to figure out which part or wire needs to be replaced to get your refrigerator cooling again. You also can check out our DIY refrigerator repair page for more how-to guides and videos, answers to common questions and error code charts.
If the temperature in your refrigerator doesn't match the temperature you set, the problem could be the temperature control board—a service technician can give you a definite diagnosis. If the board is at fault, follow these steps to replace it yourself.