We accidently ran our microwave oven empty for 13 minutes and now it doesn't heat. What is the likely cause?
ANSWER Hello Vince,
When the unit is run with no load, the microwaves can bounce around inside the unit and go back into the magnetron. This destroys the magnetron tube (AP3135931). It will most likely have to be replaced.
Answered by AppliancePartsPros.com | Wednesday, July 31, 2013