Question about Microwave Ovens

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ARCING IN MIOCRWAVE

WHILE PRESSING THE START BUTTON ON PANEL HEAVY SPARK COMES FROM THE INPUT TERMINAL OF MAGNETRTON.

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  • Microwave Ovens Master
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If the spark is coming from the terminal of the magnetron, you will need a new magnetron.
What often happens in a case like this is that the connector is too thin or is too loose, and that leads to arcing and corrosion which can damage the magnetron terminal.
Anything less than tight and clean connections will cause failure.
The solution is to replace the magnetron and put a new crimp-on terminal on the end of the wire lead. Video here.
You can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.

Posted on May 04, 2013

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1 Answer

The unit started arching inside the front panel on the upper left corner.


Arcing Inside the Microwave - Martin Microwave Inc.

microwaveglasstrays.com/shop/articles-arcing.html
Microwave Glass Trays, : Arcing Inside the Microwave - Microwave Glass Trays ...glass tray, microwave plate, glass trays, turntable, microwave oven, carousel, ...microwave energy, and will eventually it will start producing arcs and put out one heck... the damage is non-repairable and the unit should no longer be operated.

Notes on the Troubleshooting and Repair of Microwave Ovens

www.repairfaq.org/REPAIR/F_micfaq3.html
Microwave oven does not respond to START button. First ..... but with the leakage from the spot welded waveguide inside the unit. ... My clue in was a spark between the waveguide and the case, when I was messing with the Controller PCB.) ...

MICROWAVE OVEN ARCING ' MICROWAVE OVENS


Dec 15, 2015 | Microwave Ovens

1 Answer

Food do not warm up


you have problem with the high voltage circuit in the microwave.
first you need to know if it is a transformer type or inverter type.
if its a inverter type then you need to check your magnetron and inverterboard also confirm if the relay on the main PCB is turning on when you press start button to cook.

If it is a transformer type then check the following:
Check the High Voltage Fuse, it gets open sometimes
Check the magnetron if it is leaky to ground.
Check the High Voltage Capacitor, it may be short to ground or across the terminal or across the terminal.
Check the High Voltage Diode, it may be short across the terminal or leaky diode reading also check to see if there is any sign of spark on the end of the terminal.

Important check is to see that the relay on the main PCB triggers when the start button is pressed.


Try this, if you cant then ask a friend with electronic knowledge to help you out with the diagnosis ?


Thanks
Ashwin

Feb 17, 2015 | Magic Chef Microwave Ovens

1 Answer

Sharp R959SLMA


Could be arcing around HV transformer or even an HV wire, Sometimes an insulator on a capacitor will get old, dusty or breakdown and arc between the terminals. Have you ran this with the cover off to see if you can see any visual arcing??? If it cooks sure sounds like it is probably not the mag. Something supplying power to the mag arcing to ground I would expect.

Aug 18, 2017 | Sharp R959SLMA 900 Watts Convection /...

1 Answer

Microwave arcing


If the spark is coming from the terminal of the magnetron, you will need a new magnetron.
What often happens in a case like this is that the connector is too thin or is too loose, and that leads to arcing and corrosion which can damage the magnetron terminal.
Anything less than tight and clean connections will cause failure.
The solution is to replace the magnetron and put a new crimp-on terminal on the end of the wire lead. Video here.
You can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.

Apr 27, 2013 | LG Microwave Ovens

1 Answer

Kenmore microwave is sparking when you it start and then goes to pause


see this steps and fix it. God bless you
If you see arcing or sparking inside a microwave, turn unit off immediately. Arcing can be caused by having something metal in the oven cavity touching a side, an oven shelf is touching the side of the cavity, an oven shelf support has broken, microwave waveguide, or bad magnetron.
If your microwave has a shelf in it, and you do not use it, keep it out. If one of the shelf supports breaks or comes out, the microwave will arc where the support was. You will have to sand the spot down, paint with appliance paint and re-install support. If the shelf shifts on the support and touches the side it will arc.
Your magnetron waveguide will either come out of the top, or side of the oven cavity. Some will have a stirrer in it(mostly top waveguides) with a panel over, or just a cardboard type cover over it. Over time, the stirrer cover can become warped from the heat which will expose the stirrer's metal shaft which will then cause sparking. These covers and stirrers come in a kit and can be replaced from inside the oven cavity.
Your cover over a side waveguide is coated with a substance on it, and overtime this coating can come off from the heat and moisture in the microwave. These waveguide covers are very easy to replace from inside the oven cavity. Touch up any paint that may have chipped or come off because of the arcing.
If your waveguide cover and/or stirrer are all OK, then the spark is coming from your magnetron. The antenna on your magnetrom has overheated and burned, sending the microwaves out at the wrong angle. If you catch this microwave oven repair early enough, you can usually get by with just replacing the magnetron. If the arcing has caused servere damage inside the waveguide, you will need a new microwave. Waveguides are not replaceable and most you can barely see into them, let alone sand and re-paint. In this case of microwave oven repair, when you remove the magnetron, you will see the burned antenna, or your magnetron will fail the test below.

see the guide for test the magenetron and another component.

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Oct 03, 2012 | Kenmore Microwave Ovens

1 Answer

This an old range with side by side ovens which work perfectly. the 4 burners slide out, all 4 elements will heat, but do not get to a high heat, is there a control which affects all of the elements ...


Hi and welcome to FixYa, I am Kelly.

This sounds like your missing 1/2 of your input power. Go to the main CB panel and cycle the Range CB to OFF by pressing it hard to off and then back on. Test your burners again.

Still have the problem? Start looking in the area of the house to oven power connection / terminal block in the back of the oven for signs of HOT / burned terminals.

Still have the problem... Last check is to check wiring in the main controls area.

Without your model number this a VERY generic response but when all burners present the same symptom it is usually input power or control related.

If you respond with a model number I wil see what I can find that may help you troubleshoot your Oven.

Thank for choosing FixYa,
Kelly

Mar 23, 2011 | Microwave Ovens

1 Answer

Round soft key OXO Timer I need to change the clock time their model # is 1061978


Operating functions:
To set the clock, press and hold the clock/timer button for three seconds. A clock icon will appear on the left side of the screen. Input the time using the numerical buttons and then click the clock/timer button to save the time.
To set the timer, press and release the clock/timer button so that the display shows all zeroes. Enter the desired time using the keypad. Press start/stop to start the countdown. The countdown may be paused by pressing the stop/start button and resumed by pressing the same button again.
When countdown is complete, timer will beep continuously for thirty seconds and display will flash. Timer will then beep every ten seconds for ten minutes until the stop/start button is pressed.
This timer will also time up to time activities. To start count up, press clear/memory so timer reads all zeroes. Press stop/start and a plus sign will appear on the right side of the screen as the timer begins counting up.

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Electrical issues inherent in this model?


its the problem of voltage the electriccurrent.call a electrician and get the electricity power checked of your place.the oven is getting required current so this problem is coming.

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1 Answer

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look on the back panel for any hole with a "RESET" label next to it. insert a small pin to reset your microwave

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