Did sparks fly (not the romantic kind) while you were in the middle of heating up your pizza pocket?
An arcing microwave, which is the likely cause of the sparks, happens when the center rack isn’t properly fitted in the rack holder. If arcing repeatedly occurs, it could cause damage to the microwave’s interior paint, as well as permanent damage.
If this paint has already worn off and you continue to see sparks in your microwave, you can touch up the interior with an appliance paint, found at any appliance specialty shop like Appliance Factory Parts. Check out our video above for more details.