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The fuse blows when i plug the microwave in with the door closed

My emerson microwave mw8992rd recently blew its fuse. I purchased a new fuse. The problem is when i plug the microwave in with the door closed it blows the fuse. If I leave the door open and plug it in it comes right on with no problems until I close the door and then it blows the fuse

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First you gotta detach the button plate ( the thing with all the buttons) using a flathead screwdriver .Keep pushing it is stuburn. It will pop back in when you are done. the fuse is behind that. just take it out and put the new one in.

Posted on Jun 28, 2009

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1 Answer

About my Emerson microwave oven; What can cause the fuse to blow in my microwave oven?


That would be a problem with a door switch, door switch mount, or hinge.

See my help file on door switches here:
http://www.microwavecontrol.com/doorsw.txt

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I suspect the interlock monitor switch in your microwave oven is the culprit. This is one of several switches operated by the door latches. It's designed to blow the fuse if you try to run the microwave with the door open. The switch is probably stuck, or is out of adjustment (which can happen if the oven door gets closed hard), and when you restarted the oven it blew the fuse. It is possible to adjust or replace the switch as necessary, but it might not be worth it. You should have a professional do the repair as there's a chance of microwave leakage if repairs involving the door aren't done properly. Between labor and parts, the repair cost might come close to (or even exceed) the replacement cost for a small oven.

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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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This microwave seems to have been haphazarly been recommended by Consumer Reports, but it is terribly unreliable. The turntables break when popping popcorn, the main fuse repeatedly blows, and they also stop heating.

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I'd call Emerson at 1-800-695-0098 to find your nearest authorized service center to have it fixed free.

It's probably a bad door switch or door switch mount.

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

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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.

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Yes , i got this very microwave from a neighbor down the street who threw it away.When i plugged it in nothing happened or lit up.I removed the cover and sure enough it was the fuse blown.I replaced with your average buss type 20 amp fuse and it has worked ever since..I was going to write them a note thanking them for throwing it away:) i really like it.

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