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Magic chef microwave mcd18g1w blows fuse when door is opened

It happens if the door is opened during the cooking cycle and after the cycle has finished.

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Posted on Jan 02, 2017

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  • 2318 Answers

SOURCE: magic chef over the oven microwave shuts off.

Is not normal for a microwave to shutdown after 4 minutes of operation.
From the info you are providing, It looks like the magnetron might be overheating causing the thermal fuse to shut it down until it cools down. There may also be a loose connection in one of the switches or a cold solder joint in the low voltage power supply.
I would suggest to check and make sure that the fans are functional, If always did; it could be that there isn't much air circulation where the appliance was installed.

Posted on Mar 03, 2008

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MicrowaveSvc
  • 9085 Answers

SOURCE: Magic Chef Model#MCMY10SCC-No Heat-Smoke coming out

To obtain warranty service on your Magic Chef or E-Wave product within the initial one year warranty period please complete the form here.

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

Posted on Nov 27, 2008

MicrowaveSvc
  • 9085 Answers

SOURCE: vent fan high comes on automatically with cooking

Right, that would be MCO10UW and the owner's manual is here.

The owner's manual does say this, of course,

"To prevent overheating from taking place, the exhaust
fan is designed to automatically turn on at a low speed if
excessive temperatures occur. Should this happen, the
fan cannot be manually turned off, but it will
automatically turn off when the internal parts have
cooled. The fan may stay on for up to an hour after the
range and microwave oven controls have been turned
off."

That;'s standard on microwaves.

But these models do have a separate internal cooling fan (which should run any time you microwave) plus the hood vent exhaust fan, which should only run when you select it, or if there is an excessive stovetop or under-hood temperature.

So if it comes on whenever you microwave, that is incorrect.

When that happens, it's usually a defective vent thermal switch (a.k.a. hood TCO).

But since it's brand new, I would certainly contact Magic Chef about this. If it's in need of repair, they will fix it free, assuming the oven wasn't physically damaged.

For more help from Magic Chef / Ewave see here or their contact page.

For Magic Chef in Canada call 866.587.2002

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

Posted on Jan 10, 2009

snakehead
  • 1074 Answers

SOURCE: blowing fuse when opening microwave door

the microwave has a short in the power supply it can be the diode or the high voltage capacitor.have a tech check your microwave for repairs.good luck.

Posted on Mar 01, 2010

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Magic Chef over-the-range microwave oven doesn't cook. Clock, inside lights and turntable are fine


If it lights up, the fuse is fine. On all of the recent Magic Chef's I've repaired, the magnetron has been the cause of the problem you described. Another possible common culprit is the high voltage rectifier.

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Magic chef MCD1611ST microwave, the display lights up, the time and powerlevel can be set, the light works when the door is open but when i hit start everything shuts off. Any suggestions?


There are a lot of possible causes, but I'd look at the door switches first, and the wiring connectors to them. Make sure the contacts on all the switches are opening and closing.

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Where is the fuse for magic chef microwave?


The fuse is internal. Unplug microwave and ope. Casing. Fuse is in the back. Make sure tools used are insulated and touch nothing other than the fuse.

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My Magic Chef microwave oven blows fuse when i open door


If you're blowing fuses from opening the door that is the sign of a electrical short . You'll need to call a electrician to check it out. Changing the fuse in this unit can kill you. There's a capacitor that holds stored electrical energy that is dangerous. My good friend died from trying to change the fuse in his. Get a professional to check it.

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1 Answer

I have a magic chef microwave that heats well but when the door is closed it hums and get really hot on top while not in use. Eventually it will stop working all together until it cools down then I can...


This one actually sounds like the unit is cooking when the door is closed without blowing the fuse as it is supposed to do. Unplug it from the wall and let it cool down, which it probably already is. Put a cup of cold water in it, close the door and plug it in for one minute. Unplug it from the wall and check the water. Did it heat up? I'd bet that it heated the water up. Sometimes the cook relay sticks closed and it stays in cook mode. This condition is supposed to blow the fuse but really rarely it doesn't. I've only seen this happen 3 or 4 times out of about 14,000 units I have looked at in my career.
It would need a new control PCB and new door switches and probably a new magnetron.

Oct 11, 2013 | Magic Chef Microwave Ovens

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The microwave fuse keeps blowing up. Any idea why?


My Magic Chef microwave keeps blowing fuses (5 fuses) when close the door. Anybody has any idea? It is the first and last time time that I buy Magic Chef's products if their enginers don't come out with a solution because I just got it just over a year.
Thanks for your time and your expertise.

May 12, 2011 | Magic Chef MCO160UQ Microwave Oven

1 Answer

Blowing fuse when opening microwave door


the microwave has a short in the power supply it can be the diode or the high voltage capacitor.have a tech check your microwave for repairs.good luck.

Mar 01, 2010 | Magic Chef MCD1611 Microwave Oven

1 Answer

My microwave keeps blowing the fuse upon hitting the start button


you have one of three problems (H.V. diode shorted or leaky, H.V.capicitor shorted, or the magnrtron tube is beginning to draw excessive current)if thats the case its not usually worth spending that for the mag.,the other two items aren't that expensive

Jul 23, 2009 | Magic Chef CMV1000B Microwave Oven

1 Answer

Vent fan high comes on automatically with cooking


Right, that would be MCO10UW and the owner's manual is here.

The owner's manual does say this, of course,

"To prevent overheating from taking place, the exhaust
fan is designed to automatically turn on at a low speed if
excessive temperatures occur. Should this happen, the
fan cannot be manually turned off, but it will
automatically turn off when the internal parts have
cooled. The fan may stay on for up to an hour after the
range and microwave oven controls have been turned
off."

That;'s standard on microwaves.

But these models do have a separate internal cooling fan (which should run any time you microwave) plus the hood vent exhaust fan, which should only run when you select it, or if there is an excessive stovetop or under-hood temperature.

So if it comes on whenever you microwave, that is incorrect.

When that happens, it's usually a defective vent thermal switch (a.k.a. hood TCO).

But since it's brand new, I would certainly contact Magic Chef about this. If it's in need of repair, they will fix it free, assuming the oven wasn't physically damaged.

For more help from Magic Chef / Ewave see here or their contact page.

For Magic Chef in Canada call 866.587.2002

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

Jan 08, 2009 | Magic Chef CMV1000B Microwave Oven

1 Answer

Micro ios totally black . Had to reset the breaker ; is that a clue/


It has a fuse inside. Check the door switches while you're in there. The one in series with the fuse can weld in the "on" condition and blow the fuse and/or the circuit breaker.

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