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Magic Chef CMV1000B Microwave Oven: Replacing the fuse of a MCO160UW

Fuse: Take off the plastic airflow cover: In the Upper Right Hand Corner has a grey screen covering the Fuse: 125v -250v 20A Inline.

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MicrowaveSvc

William Miller

  • 9179 Answers

SOURCE: Replacing the fuse of a MCO160UW

A microwave can be dead for many reasons.

It may be the fuse, which is usually located on the floor of the oven behind the control panel or between the door switches.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

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.

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

There may also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

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

Posted on Jul 19, 2008

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Ray Sanderford

  • 40 Answers

SOURCE: we have magic chef Over the Range Microwave Oven Model: MCO153U. Microwave was dead and no power

Bad door switches normally don't cause fuses to fail. Typically there's 2 of them wired in series with each other so if one of those switches fail to turn off power the other one will when the door is opened.
There are a number of components that can cause a fuse to open; HV diodes, capacitors and fans, to name the most common culprits, and require the knowledge and safe use of a volt-ohm meter to efficiently find the problem.

Posted on Jun 15, 2014

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Have a magic chef mco160uw microwave. Had a recent


No! there is no reset, the power surge has more than likely damaged the keypad controller, and on the back is a circuit board that has the microprocessor with additional components that controls the vital areas of the microwave oven. If that is gone, it is cheaper to replace than to repair.

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Theres no power getting to microwave


Pl. check mains supply and the plug of the microwave if every thing o.k check the fuse provided inside the oven,if o.k then the problem in the control panel,check the panel by replacing the same .

Jan 22, 2011 | Magic Chef CMV1000B Microwave Oven

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Microwave appears to have no power. Does it have a fuse inside that can be reset or replaced or is it kaput?


Hi,


Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic
Microwave Oven Troubleshooting Tips

heatman101


Jan 15, 2011 | Magic Chef CMV1000B Microwave Oven

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Where is the fuse located


We have here below the link with the parts layout of your microwave
oven model. The fuse is part no 15 Line fuse

Part Number: AP3119665
made by WHIRLPOOL



Which as you can see is
located in the internal control parts area.



http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5168435&diagram_id=28370772#d28370772

Dec 19, 2010 | Magic Chef CMV1000B Microwave Oven

1 Answer

The microwave just quit working it's only 2 years old . Is there a fuse somewhere ?


Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

Oct 08, 2010 | Magic Chef CMV1000B Microwave Oven

1 Answer

I was making popcorn and the microwave just died


Since it's less than one year old, it would be fully covered under warranty. I'd suggest contacting the manufacturer to get it fixed free.

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.

Jun 07, 2009 | Magic Chef CMV1000B Microwave Oven

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MCO160UW goes dead after 3 minutes


I returned the item to Home Depot and they took it back no questions asked.

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MICROWAVE WILL ONLY HEAT ON CERTAIN SETTINGS. how do i set the heating instructions?


I have a Magic Chef model MC0160UQ. Within 2-3 minutes of heating food it shuts off completely for about 5min. Also, when I select the low fan it does not work, however the high fan works. Please assist with these issues if possible. Am I able to fix or adjust the magnetron myself since it may be overheating? or what should i do?????

Jul 18, 2008 | Magic Chef CMV1000B Microwave Oven

1 Answer

Replacing the fuse of a MCO160UW


A microwave can be dead for many reasons.

It may be the fuse, which is usually located on the floor of the oven behind the control panel or between the door switches.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

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.

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

There may also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

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

Jul 15, 2008 | Magic Chef CMV1000B Microwave Oven

3 Answers

Turntable, lights and fan inop


I'm guessing that nothing is working...is that right? If so, first guess is the breaker or an internal fuse. Nearly all units have them. You don't say what fuse you checked. Unplug the unit, remove the bulb and see what is in the socket. Next, open the breaker and then turn it back on. This will reset it. Something caused this.

Dec 19, 2007 | Magic Chef CMV1000B Microwave Oven

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