One of the first sites I came upon when researching problem had some tech input that mentioned four different reasons for my problem. All were simple to test other than replacement of control board. Went with the easiest test first and it worked. Tech had mentioned that the relay for the motor (start button) and heater were the same (parts list in manual confirmed this) for my Kenmore machine and mentioned to try and exchange them to see if start button worked then. It did. Of course this would now render the heater inoperable. But at least it was an easy test. Back in operation for less than $20. Love easy fixes for once!