Karen H Tonkawa , OK May 23, 2015 Appliance: Samsung Microwave SMH9187ST/XAA Samsung Microwave Smh9187st/Xaa / : My samsung vent hood/microwave had the dreaded se (system error) code!. How to replace Microwave Control Panel Assembly. I not only found out What? the SE code was, but got the help to fix it myself!! I watched a couple of u-tube's and got the nerve and instructions to try and fix it myself (my husband has had a stroke -- he used to be the fixer of everything!! -- So, I (Special Ed. teacher!!) gave it a try! I took the microwave apart, as instructed, and cleaned it with "duster", then put it back together -- it didn't work, but I hadn't killed it, because it still had the SE read-out! So then, I read a few more help notes and decided to try ordering the part that was supposed to be the "cure"!! In only a couple of days, a package arrived! I took the microwave apart -- by now, I was a pro at that!! Installed the new part, re-assembled everything, and plugged it in!!! It has been working every since!! Thank you so much to everyone who shares their knowledge!! Next time something goes wrong, I'll know where to go!! -- Karen from Oklahoma!! 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes