I have experienced this noise only a few times in the last 6 months. I have cleaned the filters and keep the inside very clean, I do not use...

Hello,

Thank you for contacting us. My name is Mario and I am here to help you resolve your issues. Please unplug your microwave for half an hour then test it when heating food.

If that doesn't help, the magnetron is probably on the verge of failure and will eventually stop working. You would have to take your microwave to a service center for a repair. However, replacement of the microwave oven will prove to be more practical in the long run.

I will be waiting for your response.

Thank you,
Mario V.

Erma,

Thank you for writing back. The magnetron is a diode-type electron tube which is used to produce the microwave energy. You can continue using your microwave until it dies. However, make sure you don't leave the room while it is on. If the microwave is overheating, smoking, sparking or reproducing electrical burning smell, unplug it immediately as it could catch fire due to failing.

I hope this helps. Please let me know if you have any other questions.

Thank you,
Mario V.

Thank you for allowing us to help you. If you have found my assistance helpful, please show your appreciation by clicking the green "Accept Answer" button below my first response.

If there is anything else I can help you with, feel free to ask.

Thank you and have a nice day,
Mario V.