Malott M Nacogdoches , TX April 08, 2019 Appliance: Samsung Microwave Hood Combo SMH1816S/XAA-0000 Samsung Microwave Smh1816s/Xaa-0000 / : No power. How to replace Microwave Thermostat. Found the thermostat with the connector that looked like it was slightly burnt. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes