Question about Microwave Ovens

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Our Emerson microwave died and I bought a new one. Plugged it into the same socket and it immediately shorted out and died. After the new microwave died I plugged a blender into the same receptacle and it worked fine. Then I plugged in a hair dryer and it worked fine but then when I plugged the hair dryer back into the receptacle in the bathroom that it usually is plugged into it did not work. Nothing else in the house seems to be affected and there have been no electrical storms in the past 1 1/2 weeks.

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I believe you have a bad circuit breaker or fuse. If you have a delay fuse contrilling this circuit, that would explain the spotty availability of power to the outlet. Also, a faulty circuit breaker can operate in an irregular way, as you describe.
A microwave oven requires a lot of power, relatively speaking. If your microwave is a 1200 watt model, for example it draws 12 amps of power, which could well be almost all of the power available at that outlet, providing that other appliances were not also drawing power from that circuit at the same time.
I can assist you further, but if this information is all you need to proceed that is fine too. Get back if you need more assistance.

Posted on Jul 02, 2009

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Hi, we have a Bosch HMT8656GB built-in microwave, and the other night (shortly after microwaving several potatoes), it shorted out and tripped the main fuse for the kitchen sockets. We've isolated it to...


Confirm that the receptacle where the microwave is plugged in is not faulty by plugging something else in the recepticle and seeing if it works or if the fuse blows. Check the power cord of the microwave for broken, frayed wires. Also check the bulb socket for broken wires. It may or may not be worth the cost of repair, depending on the repair cost verses a new microwave. There are repair parts available.

May 08, 2014 | Bosch HMT8656GB Microwave Oven

1 Answer

The fuse blew on my emerson microwave oven and I replaced it. This fuse has now blown. What would be causing this? Thanks....Lee


Usually what happenes is the magnetron is dead, or is dieing. It is using too much power due to overheating, or it is just worn. This is a common thing for older microwaves. take the case back off, and clean the fins on the magnetron this will fix the overheating problem. Be careful. let your microwave sit for about an hour after being plugged in. This lets the capacitors that store dangerous voltages leak off. also make sure the new fuses are ceramic fuses that are rated for 15 amps at 250VAC Do not use glass fuses! You can find a new magnetron on ebay, or on the internet some where. You will need a DAEWOO 2M218H MFI magnetron. I just tore my microwave apart, and realized I have an exact replacement for it. I just swapped them out and they both work. cool. but yeah. that's what is most likely causing it. Good luck!

Sep 17, 2010 | Emerson MW8985W Microwave Oven

2 Answers

Microwave just quit!


its more than the fuse if it did it twice, couls be h.v. diode(shorted or leaky),H.V. capacitor (shorted or leaking across) or magnetron (leaking or shorted) the magnetron tube gets expensive

Jul 17, 2009 | Emerson MW8168B Microwave Oven

1 Answer

Microwave only works sometimes.


I coudl only find a Canadian support website.
http://www.emersonelectronics.ca/emerson/en/support/



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

Jan 06, 2009 | Emerson Black Microwave Oven

1 Answer

Emerson microwave MW8991SB timer is on but cannot no starts


Many Emerson microwave owner's manuals are available for free download here.

Even though yours may not be there, there might be one close enough to help you.

For more help from Emerson visit here or get help using your appliance at 1-800-898-9020.

Get help locating an authorized 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.

Jan 04, 2009 | Emerson Microwave Ovens

1 Answer

My Emerson Microwave Model # MWG9111SL keeps blowing fuses..


You have a shorted high voltage capacitor.

Here is a link you or someone you know can use to test it, but please read the safety info:
http://www.gallawa.com/microtech/cap_test.html

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.

Emerson parts are distributed by Fox International and their number is 800-321-6993. Or you might try e-mailing researchdept@fox-international.com

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

Nov 24, 2008 | Emerson Black Microwave Oven

1 Answer

Blown Fuse


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 when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

Apr 01, 2008 | Emerson MW8775W Microwave Oven

1 Answer

Microwave problem


A microwave can be dead for many reasons.

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

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

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

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

If you or a friend decide to look into it, we have critical safety information and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk

See our listing here on FixYa: http://tinyurl.com/yzjozk

For more help from Emerson http://www.emersonradio.com ; Get help using your appliance 1-800-898-9020 ; Get help locating a servicer or parts 1-800-695-0098.

Oct 15, 2007 | Emerson MW8777W Microwave Oven

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