Question about Sharp R-820B Convection/Microwave Oven

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My microwave oven sparks inside when switched on

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  • ansari_farid Jan 07, 2009

    The turn table is non metallic glass like

  • Michael Fisher
    Michael Fisher May 11, 2010

    Is There Some Sort Of Metal Inside?

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Carousel pan base misaligned on 3spoked arm... Eliptical spin causes rubbing on back wall and Arc Welding at touch point. 3 spoked/wheel base fits on 3 prong only one way and regularly comes loose and misaligns, causing imperfect circular spin and rubbing of base pan on back of microwave wall. This causes Spark/Arc damage to Stainless Steel back wall.. Seems like regular issue.. DESIGN DEFECT............... You must find the exact 1 in 3 position for spoke to sit on center or occurs again and again when it jumps off center and misaligns again. DESIGN DEFECT....

Posted on Jun 05, 2013

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  • Master
  • 716 Answers

Replace The turntable It Must Be Chipped.

Posted on Jan 07, 2009

  • Michael Fisher
    Michael Fisher Jan 07, 2009

    Remove Turntable And Run Let Me Know If The Problem Goes Away.

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  • 52 Answers

SOURCE: sparks in oven

the burning is normally caused by a small particle of food getting stuck on the waveguide cover, this then carbonises and starts to arc. replacing cover should return oven to normal

Posted on Feb 23, 2009

reg501
  • 413 Answers

SOURCE: microwave ovens

The Magnetron has failed, causing the waveguide to become damaged. If the waveguide is damaged/burned the microwave can not be repaired and should be replaced.

Posted on Dec 25, 2008

  • 82 Answers

SOURCE: 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.

Posted on Mar 16, 2009

  • 75 Answers

SOURCE: i heard a pop and then i saw sparks inside the

This sounds like the inner lining is coming off and alloying the metal interior to spark. You will need to repair the liner and this should fix your problem.

Posted on Dec 08, 2009

  • 1891 Answers

SOURCE: sparks and strange noise when microwave is turned

YOU SHOULD NOT RUN MICRO WITHOUT ANY THING IN IT / THIS WILL OVER LOAD THE MAG TUBE . AND SOME TIMES FRY IT .. The sparking and arcing is probably a bad wave guide . this is sometimes caused by food splater / it gets in the cracks and corners and then cooks till it truns to carbon which conduts the micro's and thus arching .. clean it good and touch up any burns in the metal and repl wave guide cover. mm hope this will help .. mm

Posted on Dec 20, 2009

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1 Answer

Microwave not heating


Hi Edward
I should mention (although it's pretty obvious) that Microwave Energy is DANGEROUS.
So it's better not to fiddle with the internals.
A quick test can be done to check for electromagnetic energy (in the 2.45Ghz range) inside the oven. Put a glass of water in the Microwave Oven and place 2 strips of tinfoil across the top of the open glass above the water. Put the strips close together but not quite touching then close the door.
Start the microwave & look through the glass window. Listen & Watch for sparks between the tinfoil pieces. If there are sparks then your Microwave Oven is generating or transmitting electromagnetic energy from the magnetron tube unit.
If it's working Don't leave it sparking too long. The tinfoil can get hot enough to burn. The glass of water is to absorb any microwave energy.
There is an interlock switch on the door for safety to protect you from microwaves leaking out of the door cracks. This switch fails to function sometimes. But normally the oven won't even try to power on or spin the turntable (or Fan) if this interlock fails.
If there are no sparks then your Magnetron is shot. Its usually not worth fixing them unless you know of a specialist technician who is qualified and competent with microwave equipment.
Hope This Helps
..... Trevor

Jul 15, 2014 | GE Profile Spacemaker Over-the-Range...

1 Answer

Microwave sparks


If it sparks inside the oven then look inside for any powder paint missing... if so discard. If you has metal shelves or tin foil then don't put metal in when on microwave setting. Some of these metal shelves are for a microwave that is also a convection oven but only in the convection oven setting.

Nov 26, 2013 | Thermador Microwave Ovens

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My Goldstar MV-1310W microwave has sparks flying from the metal plate that's inside on the top.


Microwave ovens do not work well with exposed metal. IF you place uncoated metal in the oven, sparks will occur.
IF the interior of the oven has the metal exposed, it will cause sparking to occur.

There must be NO exposed metal inside a Microwave oven!

Aug 15, 2011 | Goldstar MV-1310W/B Microwave Oven

3 Answers

Sparking on right side of the inside of the microwave.


If there is spark 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.
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 switch the microwave power on and use a cup of water 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 not check the waveguides within the cabin for food particles that can burn and spark, check for rust that can corrode and spark when the ceramic paint has worn out.
If there is heating without any issues, you can use the microwave safely

Feb 10, 2011 | GE JE1860 Microwave Oven

1 Answer

Sparks coming from inside of oven body


Microwave ovens usually have a small panel inside that looks like a piece of card. This can sometimes decompose and cause sparking . If so then you can replace this easily. You should be able to get one quite cheap.
pete

Dec 15, 2010 | GE Spacemaker JVM1540 Microwave Oven

1 Answer

GE 1800 XL not heating, no power, except fan works and clock also


Hello :

It could be bad door switch or loose door switch mount . There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

or it could be problem with the control panel .


good luck .

please rate !

 

Mar 29, 2010 | GE XL1800 1100 Watts Microwave Oven

1 Answer

Microwave sparked out now it does not work


You had something metal inside the microwave. Do you have a rack inside on a revolving tray? On my microwave, if the foot of the wire rack is not on the revolving tray, it will spark against the floor of the oven. Microwave will go around round pieces of metal - it will spark if it finds a flat surface. I dont think you did any damage to your machine but try to not do this again.

I hope this helps you.

Sep 08, 2009 | Microwave Ovens

1 Answer

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

Mar 22, 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

Sparks!


your oven have been damaged don't on it again and again.....
it need reparing of heeted wires inside the oven
plz. do not use it, its may be harmfull to you because sparks shutdown your all home light or chances of electric shock

Oct 17, 2008 | Daewoo KOC-925T Microwave Oven

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