Leo J Mishawaka , IN August 10, 2014 Large burner on my range would work on high but when turned down it would shut down Sent problem to Appliance Pros via web site. They determined it was the surface unit switch. I ordered it ( it was delivered the next day via Fed Ex). I installed it and it appears to be working fine. The "how to do it video" was a great help. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes