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My microwave keeps sparking when i turn it on

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This can be caused by grease etc. inside the oven and on the wave guide which is the paper like thing in the oven. If you can remove it look for burnt areas which may can be scraped off or you may need to replace it. An appliance parts store usually has the material you can cut to fit you own.

Posted on Sep 13, 2009

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Posted on Jan 02, 2017

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follow this steps and fix it. God bless you

Waveguide Cover




If the microwave is sparking or arcing the waveguide cover might be damaged and shorting out. Try removing the waveguide cover and see if the problem goes away. If there are any damaged spots in the microwave ceiling or sidewalls, repair them and paint them with microwave oven paint. Replace the waveguide cover if it is burnt or if it will not stay in place.

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If the microwave is sparking or arcing on the side walls the paint might have chipped causing pitting in the metal oven wall. Use microwave safe paint to touch up any bare metal spots.

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Makes a really loud noise and no longer heats up yet turntable still turns and all buttons or settings work.


If there is noise it can be due to spark, is so please do not switch on unless you have confirmed the fault. It is possible that the Magnetron is leaking and sparking to the ground. As you have mentioned it was stored, it is quite possible that insect can get into the oven and create soft spots. When you switch on these will create a short and make the voltage jump and in the long run damage the magnetron.
http://www.espares.co.uk/advice/microwave/a/5/1146/how-to-replace-a-microwave-guide-cover.html

So Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off.
Now keeping clear switch on , use a cup of water inside to test.
If you notice any sparks shut off as the magnetron or the main HT capacitor can be faulty. replace with same type.
If there is heating without any issues , you can use the microwave safely

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I was cleaning my gas stove near the knobs and now it keeps sparking until i turn it off. will it eventually dry up and work again?


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Usually but not always....


Here is a tip that I wrote that will help figure out why the burner spark keeps on clicking...

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My microwave sparks when I turn it on.


Its called arcing, its either the card needs replacing (in the cabinet)or the the magnetron is sick and make sure its nice and clean in the cabinet

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Sparks


usually sparks come from turning and cooking with nothing inside the microwave..if there is grease or something on the bottom the heat will generate a spark

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