Dennis S Martinez , GA August 30, 2016 Appliance: Samsung Built-In Microwave Oven SMH9207ST/XAA-0001 Samsung Microwave Smh9207st/Xaa-0001: Oven ran when we opened the door. How to replace Microwave Door Switch. Changed out sensors in door. Did not realize there were more than one. Changed one that fixed problem with door and then had to get another one so oven would work right. Next time I will do a little more research. Changing sensors was real easy and only takes about 15 mins to do. I received parts in just two days, great service!!!!! Thank you. 18 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes