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Posted on Apr 12, 2009
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GE Spacemaker XL1800 hum/buzz noise but heating works

Our microwave (6 yrs old) suddenly started making hum/buzz noise when we heat up food. The noise is from vent area. I saw a few posts from other people talking about replacing megatron / H.V diode. I am not sure if my problem is related to megatron because I can still heat up food and turn on the vent fans. Anyone knows what problem I am having with the microwave, please help! Thanks,

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  • zhangpeitao Apr 12, 2009

    Thanks a lot for your quick reply. I already removed the cover the microwave, but don't know which component is megatron? I google the image, but didn't finy any. What does megatron look like?Thanks again.

  • Anonymous May 14, 2009

    check cap. C01 220uf 50 volt cap. opens allowing ac on the 24 volt dc contacts. the noise you hear is contact chatter.

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  • Posted on Aug 06, 2009
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Were you able to replace the magnetron? Did it fix your problem? I have the same issue, and so I wanted to find out from someone who possibly tried it firsthand!

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The magnetron needs replacement my friend, although you can still heat up food but eventually it will soon fail.
appreciate your kind comment

  • Anonymous Apr 13, 2009

    it is because you have type megatron, the correct name is magnetron, try googling this again and im sure you will come to know how it looks. goodluck my friend




    please comment

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