Question about Microwave Ovens

1 Answer

Microwave sedems to be working but not heating

Microwave is not heating Whirlpool built-in Microwave
Model GH7155XKT

not heating and has a very loud buzzing noise

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Microwave Ovens Master
  • 8,820 Answers

This is usually a shorted high voltage rectifier diode or magnetron.

If it's within the magnetron portion of the warranty (usually 5-9 years) but out of the original full warranty (usually 1 year), then your manufacturer will cover the part cost, but not the cost to visit you or the labor charge to do the work.

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.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

There may also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

If not, here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/mag_test.html

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

Posted on Aug 10, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

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

www.applianceblog.com/.../26531-Whirlpool-Microwave-Buzzing-Loud...

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 ...

www.fixya.com > ... > 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 ...

www.appliancejournal.com/.../troubleshooting-the-microwave-potential-...
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

Whirlpool builtin microwave humkming loudly


yes for sure magnetron or diode has gone bad.but usually it is the mag.magnetron when go bad they start making noise and stop heating.when chaging magnetron chg the diode with it.

Aug 18, 2009 | Whirlpool MH7140XF Microwave Oven

1 Answer

Microwave smells like burt wiring and does not heat


Well folks I'm parity sure you have got your money out of this unit and then sum. 16 yrs is a lot of service. Just buy your self a new one. It would not be worth buying parts for a dead unit.Good luck happy shopping DFD

Apr 13, 2009 | Whirlpool MH7140XF Microwave Oven

1 Answer

Everything works except the cooking part/no heating/turntable not turning, help!


you may have gotten a power surge and that can cause some funny things to happen, 1st is there power to the oven, 2nd if so there may be an internal fuse protector built in to the oven, check with the manual for anything of that sort listed. if not you may have to take it in and have it repaired by a pro. there is a lot of voltage in these ovens and unless you know what you are doing a person could get hurt

Jan 03, 2009 | Whirlpool GH4155XP Microwave Oven

1 Answer

Microwave doesn't work


The magnetron is dead. it can be replaced if you do it it is cheap if you call a repair guy its cheaper to get a new one.. parts roughly areound $100

Nov 26, 2008 | Whirlpool Microwave Ovens

1 Answer

Microwave sedems to be working but not heating


Chances are the problem is a loose connection on the magnetron, a bad high voltage diode, or a bad diode.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:

http://www.gallawa.com/microtech/diode.html (if it is NOT shorted, it's probably fine)
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

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

Sep 20, 2008 | Microwave Ovens

3 Answers

Microwave sedems to be working but not heating


We woke up one morning and our microwave had no power. I checked the breaker and outlet they are working. Any help

Mar 23, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Microwave does not heat/cook


hi

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

Not finding what you are looking for?
Microwave Ovens Logo

Related Topics:

175 people viewed this question

Ask a Question

Usually answered in minutes!

Top Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

8820 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Devabhakthuni...
Devabhakthuni...

Level 2 Expert

224 Answers

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

Answer questions

Manuals & User Guides

Loading...