Ronald M Pecos , TX July 26, 2016 Appliance: Samsung Microwave SMH9187ST/XAA Samsung Microwave Smh9187st/Xaa / : Key pad error se. How to replace Microwave Control Panel Assembly. Ordered new keypad assembly from appliance parts pro and fixed in minutes. I have to say that it was a very fast delivery. I ordered on Friday and delivered to my door on Saturday. Could not be happier with appliancepartspro.com. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes