Question about GE XL1800 1100 Watts Microwave Oven

2 Answers

Scary buzzing sound, no heat

A while ago our XL1800 would run fine, then about a minute or two into the heating cycle would make a loud, electrical buzzing sound kind of like a transformer on a power line shorting out. I replaced the magnetron (GE sent it for free since it was built in 2004), and the same thing happens. They sent another one (miracle!) and now I'm wondering if there's another problem. Any suggestions?

Posted by on

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • GE Master
  • 8,795 Answers
Re: Scary buzzing sound, no heat

Sedonix is talking about the high voltage capacitor.

When they fail, they usually short, and that will blow the fuse as soon as you hit the Start button.

I doubt it's the cap, but if you want to check that too, see:

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

Posted on Jan 20, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 579 Answers
Re: Scary buzzing sound, no heat

The scary noise is coming from the transformer (big heavy steel thing under the magnatron) that steps up the voltage for it. Something is overloading it causing it to have way too big of a magnetic field causing it to vibrate so much it makes noise. Since you have ruled out the magnatron (which almost always is the culprit) it could be the high voltage diode, or high voltage cap (more likely). Replace those two and it should work. Microwaves are nice to work on cause its a simple circuit and they usually give you a schematic pasted on the inside.

Posted on Jan 02, 2008

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

When microwave is started, why does it make a loud buzzing sound--like a Skil saw sounds?

Whirlpool Microwave Buzzing Loudly - ApplianceBlog

Aug 12, 2011 - 10 posts - ‎2 authors
My Whirlpool MT4155SPS-2 microwave oven has recently started to buzz loudlywhen operated. The sound is getting louder and more frequent ...

Whirlpool making intermittent loud buzzing noise Microwave ... > ... > Microwave Ovens
Whirlpool microwave ovens making intermittent loud buzzing noise related questions and answers. Ask your ... ...loud buzzing noise and it doesn't heat. i just tried it again and let it run for 1 minute. ... Question about Accuwave Microwave Oven.

Troubleshooting the Microwave: Potential Problems ...
If your microwave buzzes loudly and produces no heat you probably have a defective power .... I have a whirlpool oven range and it's less than a year old. .... Humming sound stops when I open door to remove food, but when door is closed, ...

Whirlpool Microwave Ovens - Consumer Affairs

Feb 03, 2016 | Whirlpool Accuwave Microwave Oven

1 Answer

GE spacemaker GL1800 runs but does not heat

For that sound it will need atechnician but for not heating you cqn replace fuses

Sep 13, 2014 | GE SpaceMaker Microwave Ovens

1 Answer

XL1800 buzzes but heats

If the magnetron was making louder noises prior then replace the magnetron. While the cabinet is open make sure to look for burned wires, check the continuity of thermal cutoffs, and check the main circuit-board for burned traces or components. The relays in most electronics are known for arcing (spot welding) and staying in the wrong position. Tap them hard with the back end of a screwdriver.
You may have to replace the capacitor too. During all of this use safe electrical practices by having the power cord unplugged. The capacitor could still have a high charge on it so be careful.

May 11, 2013 | GE XL1800 1100 Watts Microwave Oven

1 Answer

Rest all works,but not heating micowave xl1800

When the microwave does not heat the food, it means that the magnetron circuit has failed. It the part that generates the microwaves that heat the food. Often the part fails by shorting out causing a loud buzzing sound when you try to microwave something. The replacement part usually costs almost as much as a new oven, so it rarely cost effective to replace. Sorry.

Jan 18, 2011 | GE JVM1850 1000 Watts Microwave Oven

2 Answers

GE Profile Spacemaker XL1800 The microwave runs, the lights come on, timers goes, but it does not heat/cook and it makes a loud buzzing sound.What is wrong with it,and can I repair or trouble shoot it?


Thanks for using FixYa. If it’s a loud hum/buzz sound then 90% it’s usually a bad magnetron and other times it’s a bad high voltage diode. However, from what you have described it seems to be the magnetron. Please do rate the solution if the issue is resolved or post a comment for further assistance.


Jun 29, 2010 | GE XL1800 1100 Watts Microwave Oven

1 Answer

Microwave running but no heat

Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips


May 09, 2010 | General Electric Microwave Oven

1 Answer

GE Microwave does not heat and makes loud buzzing noise.

I have just replaced the magnatrton for a Kenmore microwave model # 665.606.5900 as before replacing the part there is still the buzzing sound and non-heating

Dec 10, 2008 | Whirlpool GH8155XM Microwave Oven

1 Answer

Microwave does not heat/cook


power spikes are very damaging to a microwaves internal parts, it sounds like your transformer and/or magnetron are blown. if the unit is out of warranty I would recommend calling a repairman or getting a new microwave (the transformer & magnetron are expensive and dangerous to work on) also get a small single plug surge protector for the new one.

Mar 21, 2008 | Microwave Ovens

1 Answer

Microwave makes loud buzzing sound when on and no heat

Have you tried putting a cup of water in it and cooking on a low power level? If it buzzes only when it is on the cook cycle, that would narrow it down. More detals might help us help you, including the model number.

Mar 20, 2007 | Kenmore 62622 Microwave Oven

1 Answer

Mwave made loud buzzing noise then didn't heat up anymore

When there's a loud buzz like that, it does not heat, and does not blow the fuse, it is usually a defective magnetron. Did it sound something like someone making a "gurgling" sound into a coffee cup? I think this has a a one-year warranty, with n five-year warranty covering the magnetron. You can find a local Amana-authorized servicer here:

Mar 03, 2007 | Amana AMV1162 Microwave Oven

Not finding what you are looking for?
GE XL1800 1100 Watts Microwave Oven Logo

140 people viewed this question

Ask a Question

Usually answered in minutes!

Top GE Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

8795 Answers


Level 2 Expert

224 Answers

D. E. Hev

Level 3 Expert

1059 Answers

Are you a GE Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides