The light on my Dacor ECS130SCH oven flickers on and off non-stop constantly. It is possessed... and I need a diagnosis on what is wrong. I am able to turn on the oven and operate the controls on the front pannel. I had a technican come out and his diagnosis was that he found the light relay on the main board stuck and he cleaned out the contacts. This worked for a few weeks, but the oven light now continues to flicker on and off non-stop and doesn't respond to the same treatment. I am wondering whether this is a problem with the control panel board (which has the light relay tape) or the main board in the oven which the light relay connects to? Is this a common problem? Does one of the boards need to be replaced? Thanks in advance for any guidance you can provide!