I say good job. Maybe someday you'll find out why it blew but for now I say have at it. I have replaced them before with no further problems. Sometimes if the mw is built in or in a closed tight space, it can't breathe real good and over heats. Especially if you are cooking something for a long time, I'm saying like 15 min or more. Usually just warming up stuff won't do it. Make sure it's in a good vented space and you should be ok.