Raymond S Middleboro , MA October 05, 2015 Appliance: Samsung Microwave SMH9187B/XAA Samsung Microwave Smh9187b/Xaa / : Se 5 error. How to replace Microwave Touch Control Membrane Switch. Replace membrane. Problem is with the ribbon wire, where it connects to control board. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes