George B Eationville , WA November 08, 2014 Appliance: Magic Chef Refrigerator MCBR1020W Magic Chef Refrigerator Mcbr1020w: Defrost switch was sticking every 24 hours. How to replace Defrost Timer. I figured out what the problem was replaced the switch on my 3. Year old refrigerator that had been down for a year Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes