I am able to start a wash cycle only sometimes. More frequently than not, I will push the buttons for Normal cycle, High temp, Sanitize rinse and Dry without heat (all the LEDs come on as expected), however, when I push Start nothing happens (no blinking of the LEDs, no start).

I know it is not a faulty door lock because when I push cancel and close the door, the cancel cycle starts. I can feel the switch close when pushing the start button, so it's not a mechanical problem (but could be an electrical contact issue with the switch).

This is likely the user interface, control assembly, or even the ribbon cable. Is there a way to diagnose which of these parts is defective?

Nat,
Thanks for the quick response. Unfortunately, I can't follow your suggestion - the door has to be open in order to access the start button.
Howard

No dashes or codes. When I push the start button, nothing happens - the LEDs for the options I choose remain lit.
Howard