Question about Microwave Ovens

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No power. Stopped working with a few seconds left. Heard like a popping sound

No Power to microwave. Quasar model MQS1403W

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Unit has a fuse that does fail and then there is nothing at all. would check outlet < plug anything in and make sure it works > if it does then you have to decide wether you want to repair because there may be a reason why the fuse failed < internal short or magnatron > or built in limit switch might be problem as well to find out wich is cause takes troubleshooting and with other manufacturers it is worth giving them a call and see what they offer you.

Posted on Apr 22, 2009

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Sounds like the inverter (power supply for cooking) or the magnatron which does the work----neither are cheap parts.

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My LG LRMP1270ST microwave oven stopped working in the morning. It just flat died when I put 2:00 minutes on the timer and pressed start I heard the pop/breaking sound. So immediately I stopped the...


The main fuse has blown in the microwave, you also have secondary problem that sounds like the magnetron has failed, but there are two other parts to consider, the high voltage capacitor and diode work in conjunction with the magnetron to heat the food. The repairs could run as high as a new microwave oven.

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We heard a "buzzing" sound and it stopped when I


I had a similar problem. Everyone said must be the magnatron or the fuse ....turned out to be a burned out (visually melted) thermal cut out switch ($12) on the top side of the microwave. Had to get down inside the top of the microwave. The cut out switch was tucked away right up against the the microwave box. Hard to diagnose your problem without looking at the unit in question though, could be several different things. However, my philosophy when it comes to repairs...start with the cheap stuff first!

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1 Answer

I heard a pop and the micromave did not work any more.


A pop is not usually a good sound. You don't give any details about what the oven is doing now, like whether it's still got power but doesn't heat or is completely dead. The usual part that fails is the magnetron tube, the microwave source. In many cases you can replace the oven for less than the cost of a new tube, not even including repair labor. Microwave repairs should be left to professionals, because of potential microwave leakage and the dangerous voltages inside.

If this is a basic counter-top model, just replace it. If it's a high-end model, custom built-in, or over-the-range, you might want to have it checked. Repair might still be worthwhile. But again, leave the repairs to the pros.

Thanks for using Fixya!

Oct 19, 2010 | Microwave Ovens

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Stopped working , heard a loud pop, now there is no heat


Depending on the age of the machine, either it is the power board,which is less expensive to replace or the magnatron, Usually it will be the power supply, but you will have to take it apart which is very easy

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there is a fuse inside the microwave...power, clock will work but it will not heat when it blows

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Sounds like the Magnetron has stopped working. The Magnetron is is a specially designed powerful magnet that generates the high frequency microwave energy used to heat food.

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1 Answer

Loud pop and microwave doesn't heat anymore


I have a GE Profile Spacemaker model JVM3670WF001, purchased I think in 2003. Pop sound, no Heat. Light goes on, carousel goes around,
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Microwave exploded.


Did it make a popping noise, like a .22 cal pistol? Probably one of the larger capacitors on the power supply blew up.

Mar 06, 2009 | Emerson MW8168B Microwave Oven

1 Answer

Microwave quit working


If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

It may also be the high-voltage rectifier diode.

If you or a friend decide to look into it, we have critical safety information and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk

Feel free to post your brand and model so we might be able to give me specific info.

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