I did some diagnostics per a YouTube video and then found the Appliance Parts website. By entering the model number their system provided schematics of all the parts for my dishwasher. I checked out the two electronic components that would cause the control panel (user interface) to not function. The website has a drop down to show what symptoms would be expected from each part, if that part failed. That helped narrow down my search. I sent a message to the "chat with a pro" link one evening and had an answer the next morning. The part that I suspected had failed was confirmed by the pro that answered my message, so I ordered the part. After I installed it, the issue went away and the dishwasher is again working properly. Appliance Parts will be my go to in the future for appliance repairs.