Duane V Baldwin , WI April 30, 2019 Appliance: Whirlpool Refrigerator GX5FHTXVY04 Whirlpool Refrigerator Gx5fhtxvy04: Refrigerator would not defrost. How to replace Refrigerator Electronic Control Board. Replaced the control board because it said that 99% of the time this was the problem and I had checked out the other defrost related parts a few months earlier. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes