Christopher H Mililani , HI February 24, 2020 Appliance: Frigidaire Refrigerator FGHC2331PFAA Frigidaire Refrigerator Fghc2331pfaa: Display defective numbers faded out about a year after install. How to replace User Interface Control Board. Ordered User Interface, removed (4) screws to get at the circuitboard, unplugged the cables by squeezing the connectors to unlock them, plugged replacement module, replaced and tightened the screws. Plugged the refrigerator in. All was good. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes