Question about Emerson MW8987B/W Microwave Oven

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Where is my fuse

My Emerson MW8987B micro wave died. I think it was the fuse. Where is it located

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Usually 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.

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.

For more help from Emerson visit here or get help using your appliance at 1-800-898-9020. Get help locating a servicer or parts at 1-800-695-0098.

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


Posted on Nov 08, 2008

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My Emerson microwave is about 2 years old. I washed it just like I do every week and the power went out on it.


you mean it want power up or want work when you press the star buttom?
1. check the fuse if no power.

2. If it doesn't work when closing the door after setting timer it is the micro switch that the metal lach hits when the door close.

3. unpluge the micro wave unscew the scews to the cover of the microwave remove the cover. up front by the door you will see the micro switch maybe (brown,black,white,red/white ) what ever color it is disconet it take it to the hardware store buy a new one and replace it,themreasemble your micro wave.

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I have an Emerson MW8992RD model and just opening the door blows the fuse! any idea ,could it be a bad door switch? if so where can i purchase a new 1?


Definitely sounds like a defect or misadjusted door switch. This site has venders of M/W parts. FYI,Federal law requires a leakage test after door repair, magnetron replacement or interlock repair.

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Where is the fuse in model MW8987B Thanks


it is behind the control panel but easy to get to if you remove the metal skin from the whole microwave (3 Screws)

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The fuse is located inside the microwave. You will need to remove the front panel to get to it. It will be located on the black power wire inside the microwave and installed inline. Make sure that the microwwave is unplugged before removing the front panel. Once you locate the fuse inside you will need to remove it and test it with a continuity tester to see if it is blown. If it is make sure you replace the fuse with the same amp rating you found. If the new fuse blows again then there is an electrical short somewhere inside the microwave.

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The micro wave part is not working in your oven. It is mainly due to to the defect in the magnetron and the related components like high voltage side fuse and high voltage diode etc. you can check the fuse and the diode with a multimeter. If they are ok replace the magnetron.

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I have a emerson micro wave. Its only been used lightly for 3 months. It just when dead no power at all, no lights.


If you bought it only 3 months ago, it should be fully under warranty.

I would suggest you let Emerson repair it for you at no charge.

Get help locating a servicer or parts at 1-800-695-0098.

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

May 06, 2008 | Microwave Ovens

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