Question about Magic Chef CMV1000B Microwave Oven

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My microwave keeps blowing the fuse upon hitting the start button

I have a "Magic Chef" microwave, Model No. MCD1611ST, it quit running completely while I was cooking some food. I put a new 20amp ceramic fuse in it and it lights back up, but after you set a new time and hit the start button it blows the fuse. It did this twice. What do I do at this point? Microwave is no more than 3-years old.


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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

Posted on Jul 27, 2009


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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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How do I access the control panel so I can replace the fuse?

It depends on the type of oven. On countertop models, remove the outside cover. On over the range units, remove the control panel. You may have to remove the air deflector on the top first in order to gain access to the control panel screws.

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Magic chef mcd1611st fuse keeps blowing when door is closed

Only time I have run into that problem, there was a bad micro-switch for the door. First thing make sure that you un-plug the microwave. You will have to take the outside cover off and look for a series of small switches mounted on a frame where the door latches. If you have access to a multi-meter you can check the switches for continuity. Easiest way is to remove that frame making sure that you mark or write down what color wires go each switch and then remove the wires. It may be immediately visible which switch is bad but if not check each switch with the meter. Your contacts will be a common terminal and either a normally open (NO) or normally closed terminal (NC) and sometimes both. The "NO" terminal will not have continuity until you press the switch button, the "NC" terminal will have continuity all of the time until you press the button. If you do not have any continuity at all or if you have continuity on one terminal no matter which way you push the button, that will be your bad switch. Hope this helps.

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Magic Chef MCD1611ST Microwave Oven Door latch

1) see the diagram attached for to see the fuse, you must unplugged the power from the wall, and turn OFF the c.breaker from your house.

2) if the problem is the door latch see the video use the common sense.
God bless you

Sep 09, 2012 | Magic Chef MCD1611ST Microwave Oven

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There is a fuse inside that is probably blown. If you replace it and it keeps blowing the fuse when you open and close the door, that means a problem with the door switches sequence. I could run you through that step by step.......

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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.
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Magic chef mcd1611st microwave oven,why is power gone it self off?


Check the fuse inside the microwave cabinet...

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The microwave keeps running without turning off but it's not heating anything. It still works when you press the buttons though.

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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.

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