John F Wallingford , CT September 13, 2016 Appliance: Samsung Microwave Oven SMH8165B/XAA Samsung Microwave Smh8165b/Xaa / : Samsung microwave oven model smh8165b error code e(s)5 oven would not operate. How to replace Microwave Switch Membrane. I replaced the keypad with the part I received from Appliance Parts Pro. From the time I ordered the part until the time I received and installed it, it was less than 24 hours! Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes