Don't worry. My Magic Chef is 10 years old and I frequently notice the popping sound when I turn off a burner. Not every time, but often enough that I don't get concerned.
Roland, Diane & Katie - the furry 4-footed kid
'01 Diplomat - ISC330 - Allison MD3060 - Progressive Ind. EMS-50C - Hughes Autoformer - '06 Jeep Liberty CRD