dishwasher quit mid-cycle, made a thumping noise

I figured it had to be either the motor or control panel so I gambled that it was the control since it had been draining but stopping midway through the cycle.
Removing the inner door panel was a piece of cake. When a small electronic part rolled out to meet me as I removed the panel, I was pretty sure that I'd found the problem. I simply disconnected the wiring, taking care to notice the arrangement and plugged in the new unit. Then I gently tightened the mounting screws, and replaced the door panel, being careful not to twist as I tightened it. The old girl fired right up!