Question about Microwave Ovens

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I just bought a panasonic microwave two weeks ago, for the past few days it has been making a buzzing noise that comes from the back and as long as the microwave is plugged the buzzing continues..what can it be?

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  • Microwave Ovens Master
  • 12,223 Answers

You must call to service support for check out, since it has guaranteed. call them right now. or go to ONLINE via chat.

God bless you

Posted on Nov 27, 2013

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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9098 Answers

SOURCE: Panasonic microwave buzzing noise

Yes, this is usually a shorted high voltage rectifier diode.

It is usually located behind the high voltage transformer and it attaches to the magnetron and to the chassis.

For ciritical safety links how to test the diode, see: http://www.gallawa.com/microtech/diode.html
Panasonic replacement parts can be found here: http://www.pasc.panasonic.com/epartr

Posted on Dec 06, 2007

jsrock516
  • 5911 Answers

SOURCE: Microwave won't heat/Makes buzzing noise.

The symptoms you are describing are typical of a magnetron that has gone bad. Continuing to attempt to use the oven in its current condition can cause further damage. So, I would recommend not using it. Microwave ovens are considered dangerous and repairs should not be attempted by anyone that is not electronic saavy. The High Voltage Network inside the oven has voltage potentials of 14,000 volts and higher. If you feel this is something you wish to attempt, the Magnetron part number is 1156751 and costs approx. $158. Keep in mind, if the magnetron has been arcing and making a burning smell you may have burned the protective coating that lines the walls of the waveguide. If the waveguide is damaged it is not repairable. I do not know if this is a replaceable item on your model microwave. Double check your warranty information and/or owner's manual. In many cases the magnetron is warranted for several years beyond the limited warranty that comes with most appliances. Post back with comments and let me know if you want me to assist you further. In addition, if you provide me with your EXACT model number (located along the door opening) I can narrow down parts a little better. I know this all sounds discouraging, but I do hope I have been able to help you.

Posted on Jan 15, 2008

  • 112 Answers

SOURCE: Kitchenaid builtin microwave buzzing

I would recommend changing the diodes as well. This will usually take care of the problem.

Posted on Oct 25, 2008

MicrowaveSvc
  • 9098 Answers

SOURCE: panasonic microwave nn-s963bf making grinding noise

The turntable system consists of the motor, the coupler, the turntable support with rollers, and the tray.

You can see and hear a video of how a turntable motor should sound when you rotate it by hand.

If yours is not set to be off via the control panel, and it won't rotate or it sounds like it's grinding, etc., you may have a bad motor or plastic coupler.

To replace either, you need to unplug power, then remove the bottom cover of the oven.

You can
order parts for this brand from Encompass (formerly Tritronics). Or you can call them toll-free at 866-779-5835.

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

Posted on Mar 06, 2009

nikeananth
  • 267 Answers

SOURCE: whirlpool microwave makes loud buzzing noise

When your microwave oven won't cook your food, and, you hear a loud buzzing sound, it’s normally caused by a faulty (a) diode (b) high-voltage capacitor (b) magnetron.
The diode would be the most likely culprit of the three components. It’s also by far the cheapest!

Posted on Sep 22, 2009

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