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Replaced ceramic fuse, still no power - Whirlpool MH7140XF Microwave Oven

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Some additional details of the problems you have encountered and the steps you have taken to solve the issues would prove useful in this situation.

Posted on Sep 07, 2010


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Has stopped working. light gone off at same time. plug fuse has not broke. any ideas ?

There is a fuse inside the microwave also.It is a ceramic fuse,usually 15A.It has to be replaced with another ceramic fuse of the same rating.Bear in mind,the fuse blew for a reason,so if it is the interior fuse replace it after a search for a fault.

Dec 17, 2014 | Microwave Ovens

1 Answer

Where is the fuse on KitchenAid model KHMS2050SSS microwave?

Fuses in microwaves are generally located behind the control panel. They can be close to the panel, midway back in the microwave case, or all the way back on the rear wall of the housing. Accessing the fuse will usually require removal of the entire outer case, and in some instances, the removal of additional interior panels. If you decide to do the job, be sure to replace the fuse with one exactly like the ceramic one you find in there. Glass fuses are not designed to handle the power that goes through these ceramic fuses.

Oct 10, 2014 | Microwave Ovens

1 Answer

My Kenmore Microwave 721.80513 stopped working. It is only 3 years old. Power is working. We think it is a Fuse. We cannot find where the fuse is. Anyone know?

It could be a ceramic fuse that is usually located inside the microwave, you need to remove the cabinet. You will see it place there on top (usually) or it could be under a cover there. Be sure to replace this with a like fuse, nothing too small or too large. You should also be sure to use a ceramic fuse, as a glass fuse will burn out much quicker and you'll be in the same spot.
Hope this helps,

Sep 27, 2011 | Microwave Ovens

1 Answer

Microwave will not come on, just dead. any suggestions? We cannot find our manual

There is a ceramic fuse inside (automotive style fuse) which may blow in the event of
a power surge or failing magnetron. These are available at most radio shack or
appliance parts store for a couple of dollars. Make sure to unplug unit before removing
cover and be very careful around the capacitors as they can retain a high voltage
similar to an electric fence. The fuse will be ceramic with metal ends , replace with
equal value amps and volts (stamped on metal bands at each end) for example
5A 250 V is read as 5 amps at 250 volts. These are slow blow fuses and cannot be
replaced with just automotive fuses . Hope this proves helpful

Feb 27, 2011 | Microwave Ovens

1 Answer

The hotwire to the lights touched the frame and sparked. The micro completely shutdown, no power at all, is there a fuse or something?


There is an internal fuse in a ceramic holder towards the top of the oven, however a direct short as described could also have taken out one of the micro-fuses on the PCB panel as well.

If you know how to discharge the capactor and ground it before poking around, check the continuity of the main fuse in it's ceramic holder. If that is OK then unfortunately the PCB may require replacement.

Mar 21, 2010 | Goldstar MV-1310W/B Microwave Oven

1 Answer

No power cannot turn on

Inside the unit behind the control pannel is a ceramic fuse looks like a car glass type fuse. To replace it you must remove the outer shell. First unplug the device,2nd
place on a flat work area,3rd remove the screws from the back of the unit,4th pull the outer shell back if it's stock a flathead screwdriver can be used to aid in removal,5th after removal look behinde the control pannel find the main power wires by following them from the back of the unit the fuse will be about 1" long and about as big around as a #2 pencil remove it carefully and replace it with a new ceramic fuse. The fuses are about $3.00
If you don't feel comfortable doing this yourself find a repair shop it will cost about $35 dollars
Hope this helps
Please leave feedback

Jan 07, 2010 | Kenmore 63672 Convection/Microwave Oven

1 Answer

Daewoo Microwave KOG 867 T9-DEAD??

There could be a main fuse inside the unit. Mine has one that is ceramic, sort of like the old glass car fuses but ceramic instead of glass. Digi-Key has all kinds of fuses,

Aug 03, 2009 | Daewoo KOG-867T Microwave Oven

1 Answer

Power off

Chances are if there is power available to the unit and it will not power up, the internal fuse has opened. This is not a user serviceable type repair. that being said, remove the cover, near the power supply is a ceramic fuse, test/replace the fuse reassemble. if the fuse continues to blow it will most likely be easier to replace the unit than to repair it

Feb 03, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

2 Answers

Nothing working - just quit. Power source ok.

There are 3 fuses in that microwave. I had a similar issue. The one that I had to replace was the little ceramic fuse that is in line after the big fuse which is connected to the main line.
I couldn't find the ceramic fuse but I replaced it was a glass one about a year ago and it has been working since then. The fuse if located on the right front panel.

Dec 29, 2008 | Whirlpool MH3184XP Microwave Oven

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