I replaced the on and off switch for the big burner, each one is different for each burner. The problem is inside the switch there and you can not get it apart, just replaced it and it will really heat now , too hot now and you have to turn it way down to a lower temperature , it is working good. They had good pictures of the switch that I needed on the web site, pulled it up and looked at it to make sure that was the one I needed, I could not find it any place else, but they had it here at Appliance Part Pro, got it here in about two days like they said, and there it was in my mail box. Just take several pictures with your cell phone of where all the wires hookup on the back of that switch , and get them back on right.