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Pete Medina Posted on Jun 20, 2019
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Well microwave will heat whatever is in there and then stop, like it lost power, the light will turn off and then after a few minutes it will reset itself and power up again. what would cause this?

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christiaan saayman

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  • Expert 132 Answers
  • Posted on Jul 16, 2019
christiaan saayman
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On your magnetron is a overload switch bolted with 2connections one from mains the other to machine replace and try again good luck

5 Related Answers

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Nov 11, 2006

SOURCE: Microwave works with the door open

The top door switch is almost certainly defective or loose. Most likely the latter, and possibly due to a loose or broken mount. Chances are that only the fan and light are on, but it's not wise to take chances with microwave energy, whuch can cause burns and fire. One way to possibly test this theory is to pull up gently on the door and see if it stops doing it. But that's not a foolproof test. A broken or loose mount can be caused by inadequate plastic or improper assembly techniques during manufacturing, by slamming the door, or other physical damage. Bad door switches are usually caused by opening the door while it's cooking instead of hitting the STOP KEY first. I have a helpful text file on door switches with safety tips that will help you. You can find it by searching on Yahoo.com (not Google) for microwave safety.txt Good luck and be safe!

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Devabhakthuni Venkateswara Rao

  • 225 Answers
  • Posted on Sep 29, 2007

SOURCE: Panasonic NN-S533WF Microwave

because of high voltage circuit thats happend ,please check highvoltage circuit may be short circuit or any companent burntout. check magnetron and high voltage diodes etc.

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on May 09, 2008

SOURCE: Sharp Covection Oven/Microwave stops after 1min on any setting

This 59-second stop failure is due to a problem in one of the damper-related components, most likely the switch, but it may also be the motor or the damper door.

The damper is a door inside that opens or closes depending on cooking mode. If the controller thinks that the door is not in the right position, it will shut down the cook cycle.

See the attached sample photo.

If you or someone you know wants to look into this, we have *critical* safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

We even have a video on our site that shows you how to safely & easily remove the control panel assembly to send it for service.

We're happy to help and we appreciate your thoughtful rating of our answer.

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MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Jan 10, 2009

SOURCE: Microwave stopped heating, evenything else works

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Jul 07, 2009

SOURCE: microwave won't heat

Sorry my Clarification Request came out as a single blob of a paragraph.

That's not how I typed it. I never write that way!

So I've pasted it here, but as a solution.



Magnetrons generally should last about 2000 hours, but several factors can shorten that.

If it's not OVER ten years old (from the purchase date or the date on the tag inside the unit) then the magnetron is still under warranty.

From the owner's manual:

"For the second through the tenth year from the date of original purchase

"The magnetron tube, if the magnetron tube fails due to a defect in materials or workmanship. During this nine-year limited warranty, you will be responsible for any labor or in-home service costs.

"For the above limited warranty: To avoid any trip charges, you must take the microwave oven to a
General Electric Customer Care® servicer and pick it up following service. In-home service is also
available, but you must pay for the service technician’s travel costs to your home."


GE Customer Service is here, and you can verify the warranty status and find your nearest authorized servicer.

If you're sure the magnetron's bad, it's still under warranty, and you or a friend are handy, they will send you the magnetron to do it yourself. Call them at 888-239-6832.

Be persistent. You may have to speak with a supervisor.


It does sound like the magnetron overheated and the magnetron's thermostat opened until it cooled down.

An overheating magnetron can be due to:

  • operating oven without cover(s) in place
  • wrong magnetron installed in oven
  • an old or otherwise failing magnetron
  • cracked magnetron magnet
  • improper power line voltage (should be 110-125VAC)
  • foods low in moisture (popcorn & bacon, e.g. - add 1/2 cup of water in rear oven)
  • failed or inoperable cooling fan or hood vent exhaust fan
  • deteriorating foam weatherstripping seals in air ducts or on outside cover
  • blocked air vents (dust, animal nest debris, insufficient free air space behind & around oven, etc.)
  • clogged or greasy charcoal filter or grease filter
  • blocked duct in hood vent exhaust
Since yours is a counter top model, there are less of those factors to worry about.

When you hit Start to microwave, do the inside light, cooling fan, and turntable all come on?


Any unusual noises? Is it louder or quieter than usual?

We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are operating here.

You can find helpful exploded view diagrams and order parts if needed by entering your full model number from the tag on the oven here.

Let us know what you find out or decide.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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I have a Kenmore Microwave Hood combination that will not heat. Turn Table works and fan comes on but does not heat. Did I press a wrong button? How do I get the microwave working again?

I suppose it is possible you pressed the wrong button - if you disconnect it from the power for a few minutes it should cancel whatever action you might have taken, though realistically it is more likely your microwave has developed a fault that is best tackled by the repair shop.
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Why does my microwave turntable turn when I open the door?

We recommend you have the microwave evaluated by an authorized service center.

Authorized service centers can be located in the below link.

www.panasonic.com/repair
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The micowave does not start. The light works and the time does put does not start to heat

Good Afternoon Kathy, thank you for your inquiry! There are a few reasons why a microwave no longer heats:

Power Supply
Plugged into GFI Outlet
Faulty Control Panel
Faulty Magnetron



Let's try resetting the appliance by either unplugging it or flipping the household circuit breaker off. It is important to wait approximately ten minutes and then turn the microwave on. If resetting the power does not correct the issue, then once the tech has ruled out a number of possibilities, he or she can pinpoint the exact problem and the necessary part to fix the issue. Since parts can often be quite costly, I would personally recommend reaching out to a qualified tech who can accurately diagnose the issue your unit is experiencing.
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Oster OM1201E0VG countertop microwave

It sounds like the thermal fuse may be defective, or the fan is not running, or the magnetron is getting to hot. If there are any heat issues the thermal fuse will cut power and reset in 5 minutes.
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This is a list of possible causes. 1. Defective triac or relay 2. controller is confused (pull power cord for a minute and see if it resets) 3.Defective controller or touchpad.
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If you remove the outer cover of the microwave, you will see a magnatron. Usually on the RHSide of the micro. This magnatron will need replacing. On the magnatron,is an over temp.sensor. If this gets hot excessively, then all will stop untill it cools down. This indicates magnatron is faulty.(Assuming cooling fan runs when micro program is selected and switched on). Honestly, i would suggest caution if undergoing this repair as the voltages are extreemly high and there are proceedures to repair theese units. Testing equiptment a must.
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Try first unplugging power cable for ten minutes, and see if it clears the error.
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After heating beverage, turned off microwave before the three minute cooking cycle was up. Closed door and did not push any button. Shorlty after, the air smeleed of burning rubber and sensor error went...

Please reply back with your brand and model number so we can help you.

The first thing to try is a "hard reset". Unplug it from the power line for a few minutes, plug it back in, set the clock, then try again.

Let us know if the hard reset doesn't fix it.
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