Ricky H Lincoln , AR September 15, 2017 Appliance: Samsung Range NX58H5600SS/AA-0000 Samsung Range Nx58h5600ss/Aa-0000 / : No digital buttons work error code ec. How to replace Range Main Control Board. Ordered a Pcb board and membrane switch it fixed the problem 15 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes