Patrick M Centralia , WA July 16, 2019 Appliance: Model TBF18DWD No defrosting was happening We went to the Appliance PrartsPros web site and entered the problem. The resolution for our refrigerator was the two items suggested. We purchased and installed both items and within 24 hours we saw immediate improvement... and now after more than 3 days, the OLD refrigerator is working like new again... Both the tech advice from the site and the quality parts were reasons for the success. Thanks, Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes