Judy I have a Kenmore 790786920405, the controller board failed and I ordered a AP4510793 and installed it yesterday. The unit did not power up, I compared the boards prior to installation, it looks identical. (I had this replaced 7 years ago). I checked to make sure I installed the ribbon cable correctly. We checked voltage coming in from the harness, that was good. Is there a reset function, secret handshake for the board? Could the board be bad?
Answer Judy, You will want to test to see if there is 120 vac from L1 to Neutral on the control board and from L2 to the Neutral. If there is 120 vac on each of these then this will be a faulty control board. Read More... Answered by AppliancePartsPros.com | Tuesday, May 28, 2019