Rollin R Northfield , MN May 24, 2020 Appliance: Model GDF620HMJ2ES - GENERAL ELECTRIC DISHWASHER The dishwasher display was completely dark when door was closed prior to this it had been blinking on and off even with the door open. Replaced the lower main power control board, the top logic board, and the door latch switch. The unit is working great now. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 2+ hours