GE Spacemaker XL1400 (JVM1451BA) Microwave manufactured Dec. 1998
In the span of a month, there were two times that while cooking (popcorn and just re-heating), there was an extremely loud crack or pop. The microwave continued to function normally… nothing seemed wrong. It definitely was not the food or containers inside that made the noise.
Any ideas what is happening?
Best Answer
Electric Arcing inside the microwave where its power is converted to a very high voltage is the most likely culprit. Based on its age, I would recommend replacing it. Microwaves are dirt cheap these days.