Joseph H Northwood , OH June 20, 2021 Appliance: Whirlpool Refrigerator GB2SHDXTQ00 Whirlpool Refrigerator Gb2shdxtq00: Ice buildup on evaporator which caused the refrigerator section to reach 50 degrees and above in a week time period. How to replace Refrigerator Electronic Control Board. Replaced the electronic control board. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes