The dishwasher is on a dedicated circuit so I tried cycling power at the circuit breaker. No change. Searching online I discovered the thermal fuse that is in the control panel, ahead of all the control panel components, so I assumed that was a good place to start. I shut off power to the dishwasher, removed the six screws that attach the control panel, and found the fuse in an easy to access location. I disconnected the leads to the fuse and checked continuity through the fuse. Sure enough the fuse was open. I ordered the new fuse from Appliance Parts Pro and it arrived quickly. It was easy to replace following the instructions that came with the new part. Total time to repair, including diagnosis, was less than half an hour. Dishwasher is now running well, but I'm watching for any indication of a problem that caused the fuse failure in the first place.