This has been going on for a while but is getting worse. The whirring starts on the linked video when the timer hits the 43 second mark. I don't think it's the magnetron because it will do the same thing at 30% or 20% power. Any ideas?
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.