Question about Emerson Black Microwave Oven

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No Power We recently purchased a Emerson 8992sb counter top model that has no power to it when you plug it in. If you bang on the bcak area above where the plug goes in the 00:00 appears on the display. However, if you push a button the thing shorts out and no power is available. I went to open the back but there are two screws that are different than all the rest that I can not find a tool for. They have a star with a nipple in the center. Any idea where I can get this tool? Greg

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  • Farrah01 Apr 23, 2008

    I too have an Emerson Microwave Oven Model No# MW8992sb Suffix A
    It has been working great for 1.5 years and now all of a sudden it is tripping the fuse on the fuse-box. I've moved it to other outlets and have the same problem. After I reset the fuse I can use it once. When I take the item out of the oven and close the door the lights across the top that can show the time or 00:00 go off and the fuse has to be reset on the house fuse box.
    I couldn't find where you offered a solution to Jessica's power problem with her Emerson Stainless/Black Microwave oven. Please Help! Has there been a recall on this model?



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You should check it make sure that the microwave is the only unit on the breaker. If there is another appliance that is drawing power from that particular breaker, because the MW pulls that much power, it will trip the breaker.
I had the same issue, and a relative that was an electrician told me to check this. I did, and found the can opener and toaster on the same circuit. I put the microwave on its own, and it hasnt tripped since..
Good Luck ;)

Posted on Nov 02, 2008

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Hi there!

The cheapest way is to break the stud out with a small, strong, flat screwdriver. The give way quite easily. Then a normal multispline should do the job. Check for loose wires and loose solder connections on the display panel. You may even have a fuse that's hanging by a thread, hence the intermitency. Regards and good luck. JUS004

Posted on Apr 01, 2008


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Model NE-9970. After a storm-caused power outage, why does the microwave have no power to the control board?

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Emerson may be able to tell you which part has failed but you may have to have the unit looked at be a small appliance repair person. Send Emerson an email to with your model number and the problem you're having. If the unit is out of warranty, it may be cheaper to replace the microwave depending on what you paid for it. Keep in mind that the labor on any repair will be a minimum of $50 if you have to take it someone's shop, and that doesn't include the price of the part. Any part needed would be purchased from Fox International who's the part distributor for Emerson. They wouldn't know which part you need, however, because they're just a large parts store. Below is the link for Emerson's website.

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My mother just bought an Emerson MW8119 Microwave and can't figure out how to only set say 15 seconds cook time. Is it possible?

Hi! I just purchased the same microwave, and came online to find the solution. I was then able to find the correct answer to this problem. On this model, Emerson does not put a "time cook" button for odd cook times such as 15 seconds. Instead, they have you push the "Power Button" prior to setting the cook time.

If you want to cook on full power, press the power button once, and then enter your cooking time and press start. If you want to cook on 50% power or 30% power or something like that, push the "Power Button" several times until the appropriate power level is displayed, then enter the cook time and press start.

The reason that it starts up right away when *********** pushes the 1 button is because Emerson has the quick cooking feature for 1 minute through 6 minutes. You only have to push the number once to get the 1 minute cook time or anywhere through 6 minutes respectively.

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Test the high voltage capacitor, the rectifier diode.or the magnetron. If all this are fine, test the control board.

If it additionally does not spin and no light, then check also the door switch and fuse.

The diode and capacitors can br tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, even if power is off. Capacitors can get discharged by shorting their two contacts.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.

All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, contact the seller here to purchase parts. (here in UK).

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I coudl only find a Canadian support website.

Toll Free Customer Support: 1-800-663-5954

In U.S.A.
For all product purchased in the U.S., please contact:
Emerson Radio Corporation
9 Entin Road
P.O. Box 430
Parsippany, New Jersey 07054-0430

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what is wrong is that your megatron went bad, is this a counter top unit or is it a built in? if it is a built in i would suggest fixing it, and if it is a really expensive counter top i would fix it, but the part cost about $80 to $100. so it would be up to you. if you want to go for the fix write me back and i will walk you through it.

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