We heard a "buzzing" sound and it stopped when I

If the electronic door open button on your Westinghouse microwave is buzzing when you press it and the door does not open, it is possible that there is a problem with the door latch mechanism. The buzzing sound may be caused by an electrical issue, such as a short circuit or a loose connection. I recommend unplugging the microwave and carefully inspecting the door latch mechanism for any visible damage or loose parts. If you are unable to identify the cause of the problem, I recommend contacting Westinghouse or a qualified appliance repair service for further assistance. It is important to have this issue addressed, as a malfunctioning door latch on a microwave can be a safety hazard.

The buzzing is quite common in microwave ovens.

The cook relay on your control board is shorted, and the unit is cooking whenever you close the door.

When the magnetron overheats, its thermostat opens, shutting power down until the unit cools to a safe level, then power is restored.

I regularly repair these with my $54.95 service, which includes insured return shipping.

Details are here, or for full information and instructions, please e-mail me here at [email protected] and remind me of your full model number and symptoms.

Whirlpool Microwave Buzzing Loudly - ApplianceBlog

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Aug 12, 2011 - 10 posts - ‎2 authors
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It is one of two things, a defective door switch, or the keypad control board has failed.

This has been repaired and shipped.

It sounds like the high voltage section may be on whenever the door is closed, likely due to a shorted relay on the control board, or possibly a problem with the door switches and mounts.

You should be able to find help at the DeLonghi customer service site.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

The fan could have an obstuction. I have heard of tech sheets getting into the fan and causing a vibration and vibrating sound.

The magnatron is shorting, overloading the high voltage transformer. From the picture this looks like an older unit and is probably not worth a magnatron replacement.

This problem normaly happens when the door is not closed properly for a long time and flashing and buzzing starts to give user a indication for same. Allthough it is not risky as microwave oven has safty door switches wich does not allow oven to operate while door is open. Take care and close the door properly before you leave kitchen..