My dishwasher will NOT turn on. All of the lights work when pressed, but when I press the "Start/Resume" button nothing happens. It won't turn on. I tried a diagnostic (heated dry/normal wash/heated dry/normal wash sequence). After two minutes I hit "cancel/drain", but I still have the same problem. My unit is still under warranty, but Sears wants $75 just to come out to my home.

Any suggestions are greatly appreciated.