Rob D Bear , DE January 14, 2018 Appliance: Samsung Microwave Hood Combo SMH1816S/XAA-0000 Samsung Microwave Smh1816s/Xaa-0000: Microwave lost power and went dark. How to replace Microwave Thermostat. Replaced thermostat above the cavity. I posted a YouTube video https://youtu.be/xqidYkMglqw 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes