Answer Hello Ran. You will need to test and see if there is power coming to the control board. If so, and nothing works on the unit, you will need to replace the board 5304514670 in the unit. If the lights work, but the unit won't start, you will need to test the door switches and see if they are good. If so, replace the control panel 154791803. 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, May 23, 2012