How to Troubleshoot & Replace Ge AP7204355 / WD21X31910 Dishwasher User Interface Control Board

Per an online video, I checked the water and power feeds to ensure that I had enough slack to move the unit out. I moved the unit out and removed the kick plate and insulation. I disconnected the power feed to the door. Per the video, I removed the door. I unscrewed a screw behind each hinge, and then the two star headed screws on each side of the door (two were stripped at the factory, so I had to us e a phillips head screwdriver on those). Per the video, I removed the inner panel of the door, disconnected the control panel wire feeds, removed the plastic control panel cover screws, pulled out the panel, removed the clear plastic cover, replaced the panel, and reassembled. I reassembled the door (I replaced all four star headed screw with new 1/2" machine screws with combo standard / phillips heads). I put the door back on the unit, re-attached the spring lines, connected the power feed to the door, put back insulation, and reinstalled the kick plate. Slide the unit back in, plugged it in, and it works as it should. If it wasn't for the stripped screws, the time required would have been about 30 minutes. 

I powered off, removed the door from the unit, removed the aluminum cladding from the frame and then removed the UI unit. I had to work a little to pry the UI unit open without damaging the case. I set the 'personality jumpers' based on the included instructions per my model number. Then it was pretty trivial to re-assemble the UI (buttons + control board + case) and then put the whole thing back together. The applianceblog was clutch! https://www.applianceblog.com/mainforums/threads/ge-dishwasher-gdt545psj2ss-intermittent-loss-of-power-to-the-door-controls.94622/ 

Ordered circuit board from AppliancePartsPros. It worked for two weeks,then stopped. You sent another one and the same thing happened after one week. In total, three circuit boards were sent, and two were mailed back. Your technician suggested it maybe the Top Logic board. He was right! It arrived the following day. It was exactly what the dishwasher needed-working fine now. Thank You 

Https://www.applianceblog.com/mainforums/threads/ddt595ssjss-ge-adora-needs-new-control-board-already-randomly-beeping-control-panel-died.69360/ Mine was a user interface board. The above link was tremendously helpful. Thank you! 

Appliance repair blog helped me diagnose. Green led was solid on main control board. Replaced main control board. 

Replaced the powerboard 

Replaced Interface board and harness. 

The dishwasher started to set a tone,like when you open the door. But would sound off every now and then. Then just stopped working. No power to user interface that I posed a question to APP on what my problem was. They answered w promptly. I ordered the part which I received within 24 hrs and installed it that day. I watched APP video on the process which I really needed. Made it simple. 

Replaced defective user interface panel 

Replaced it using YouTube videos as instructed.