Spencer E Kailua-Kona , HI March 08, 2015 Appliance: Magic Chef Refrigerator MCBR1020W Magic Chef Refrigerator Mcbr1020w: Our magic chef refrigerator was making a loud tick tick tick sound whenever the motor was on. How to replace Defrost Timer. I ordered a new timer, pulled the refrigerator from the wall, searched the back of it to locate the same part that I had purchased, found it enclosed in a small plastic box in the lower left-hand corner (as I was facing the back), and switched it out with the new one. No Murphy's Law that day. The repair was easy. We have a silent refrigerator once again. 10 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes