Question about Whirlpool GH7145XF Microwave Oven

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Arching inside microwave

Arching when microwave is on

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  • hmorris28 Nov 01, 2008

    Is arching a blue-ish light shooting from the top that causes the microwave to make a humming noise? All of a sudden mine started doing this. I've cleaned the inside of the microwave and it still does it. I don't know what to do. Please any suggestions are appreciated.

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Un plug it right away.

there are carbon deposit near the wave cover. the arching is coming from the magnetron to any exposed metal inside the unit or any carbon deposit since carbon is already conductive, it is sensing it as a metal.

remove and clean the interior of the microwave. polished and paint all exposed metal that you will find in the interior.

then test again the unit.

tnx 4 using fixya,

drcool

Posted on Sep 30, 2008

  • francis rivero Sep 30, 2008

    hi bcubed,

    would you change the rating with a fixya if i'm right?

    ratings are as important to us as answering your questions. and a helpful rate still gives us a negative 0.1 point.

    tnx 4 using fixya,

    drcool


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What to do when the microwave is arching.


Hi.
If your microwave cavity is crossed by luminous discharges of current , and you see flashing arches of current from the magnetron area to other areas of the microwave oven cavity, then we commonly say that the microwave is arching.

The first thing to do in this case is disconnecting power immediately, and trying to remove the cause of arching if possible.


Arching will damage the microwave oven, if it goes on for enough time.
Any metal conductive object, such as a spoon or a fork will cause arching if left inside the oven when the microwave device (the magnetron) is operating.
Ensure that there is no metal object inside, while the appliance is operating.
Some vegetable with an high amount of metal , and some other ingredient, like bacon , are known to cause arching in sporadic cases.
In that case add a little water to the food in the oven and try again.

Sometimes recycled paper, or use of containers that are not for microwave can also cause arching. In that case use a different container, or paper.
If there is arching and bad burnt-plastic-like smell with any food being cooked, that means that there is a major problem, and that if the oven is used in this condition, you may get further damage to the appliance. In some case there may also be safety concerns.

As said, you get arching inside microwave when inside the cavity there is a strongly conductive object, such as a metal object or carbon residue.
You also get arching when the oven cavity is damaged.
In this last case the cavity may have lost insulation, and it is better having the oven repaired by a technician, that will also conduct a radiation leak test on the appliance to prove its safety.


To attempt fixing the problem by yourself , you can do the following:

Disconnect power cord.

Check inside the oven cavity, ensure that there is no foreign object inside (such as a small screw). Check also under the turntable.

Check that the light and the magnetron covers are well in place.

Clean the cavity thoroughly, clean also the lamp enclosure if this can be accessed. Carbon residue from food may be causing the arching.


If after cleaning the arching is still there, that means that the cavity is damaged. In that case better calling a technician.
A damaged microwave may loose insulation , and this may be very dangerous for health.

If you want to contact a technician, the best thing to do is ringing the phone number listed on the appliance owners manual.




Ginko.

on Feb 06, 2010 | Microwave Ovens

1 Answer

GE Spacemaker SL 1800 arching


Get some warm soapy water and clean inside making sure there are no food particals, if no change! the magnetron may be breaking down.

Mar 13, 2012 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

I'm experiencing occasional arching from the center of the oven i.e. out of the spindle that rotates the metal rack and glass turntable. I cleaned thoroughly and it seems to have minimized the proble


Its unlikely to be associated with the tuntable motor. Units are tuned to prevent arching. Therefore it appears something may have changed inside the unit. Be sure there are no loose items or bits of foil or other mateallic items inside. Also check metal turntable.

Dec 31, 2011 | GE Advantium 120 Convection/Microwave Oven

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Electrical arching between top metal plate and shell?


i would imagine its a shield but iam not completely sure without a good look

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My oven is starting to arc. Does it need to be cleaned? This happened to my last oven and it was not repairable


if you are seeing the arching inside the unit throught he door you have exposed metal somewhere they use a protective coating on the inside and when paint wears off or has been scratch off and any exposed metal will cause it to arch... they sale touch up paint that can correct problem at most appliance stores and some home depots/ or lowes hardware stores.... good luck to you

Jan 09, 2011 | GE Advantium 120 Convection/Microwave Oven

1 Answer

Started arching


This can be caused by grease in the oven especially on the paper like filter inside most of them. If it has burnt spots it may need to be replaced.

Aug 30, 2009 | Emerson MW8102SS 1100 Watts Microwave Oven

1 Answer

Humming and sparking inside the microwave


Sounds like you have metal inside oven, and arching can happen if nothing is in there to absorb energy.

Mar 15, 2009 | Microwave Ovens

1 Answer

Hole in plastic on inside of door


check the conductivity of the plastic with an ohmmeter by placing the probes an inch apart on the plastic surface. If the resistance is large or infinity, the plastic probably performs no role in stopping the microwave radiation. If so, any epoxy probably can be used to close the hole safely. Make sure you don't use too much and if possible place tape over the repair and orient the microwave so the epoxy presses against the tape while drying to prevent it from oozing into any door hinge/close mechanism. Otherwise, a piece of microwave door glass from a broken unit can ge glued over the hole and should stop the radiation. You can check for leakage with test units but be very carefuly anyway.

Nov 30, 2007 | GE JVM1650 1000 Watts Microwave Oven

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