back burn would turn high no mater where you set the control knob.

Well I was just guessing the controll switch was bad so I ordered a new one. So I cut off the power and held the switch close to the old one and changed the wires one at a time matching the connection terminals and cut the power back on and presto it WORKED..The service man wanted to charge me 65.00 dollars just to check it out. I figure I saved about 100.00 dollers plus I learned something.