Frank P Placentia , CA October 23, 2020 Appliance: General Electric Free Standing Microwave ZE2160SF03 Ge Microwave Ze2160sf03: Microwave would not heat. How to replace Primary And Secondary Door Switch. Found that the Primary switch had broken again after abut 2 years since last one replaced. I ended up replacing all switches since I had it open and the cost for the switches are minimal except the primary and secondary. I re-krimped the conectors as they are rather loose fitting. Plugged it in and it works. 7 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes