Answer Hello Tom. You need to check the door lock 131763256 on the unit and see if it is bad and needs to be replaced. If it is good, then either the motor or the main board is bad. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html Read More... Answered by AppliancePartsPros.com | Wednesday, July 23, 2014