Lavon B Gadsden , AL October 16, 2018 Appliance: Samsung Microwave Hood Combo SMH1816S/XAA-0000 Samsung Microwave Smh1816s/Xaa-0000 / : SE code. How to replace Microwave Control Board Assembly. New mch board 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes