Question about Microwave Ovens

1 Answer

Crystal microwave oven model WP900AP23 does not heat up.

Display exhibits all of the modes according to existing functions, plate is rotating but any heat...

Posted by on

  • 1 more comment 
  • levtch Dec 13, 2008

    Hello.

    First of all, thanks for quick response.

    It is right: there are light inside, turntable rotating and display panel responding appropriately to demanded function, but it is not heating. Any unusual noise is not detected (the same noise as during normal operation in the past).

  • levtch Dec 18, 2008

    Hello.

    First of all thanks again for your support.

    Right now I have found out a bad high voltage fuse and disconnected in both direction high voltage diode. So, I am going to purchase these parts and replace it (I will update you about results).

    Unfortunately I have not idea how I can check the magnetron.



    Thanks and Best Regards,

    Lev.

  • William Miller
    William Miller May 11, 2010

    Your post got cut off.

    Do you mean to say that when you try to microwave, the inside light and turntable operate, but it's not heating?

    Any unusual noises? Is
    it louder or quieter than usual?



×

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
  • 8,930 Answers

With the symptoms you have, I would most strongly suspect a shorted high voltage rectifier diode, a bad magnetron, or a bad high voltage diode.

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.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

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
(if it's not shorted, it's probably okay)

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

You can contact your manufacturer about parts by consulting the contact information in your owner's manual.

If you have no manual, I would suggest calling the dealer where you bought it to see if they have a number for the mnaufacturer.

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

Posted on Dec 15, 2008

  • William Miller
    William Miller Dec 19, 2008

    If the high voltage rectifier diode is not shorted, it's probably good.

    My solution above shows you how to test components if you or a friend has a multimeter, VOM, or other test / continuity meter.

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


×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Frigidaire microwave plate won't turn


The motor for the rotator is bad. It has to be replaced.

May 06, 2013 | Frigidaire Microwave Ovens

Tip

Error Code "d" - Microwave does not heat


The microwave could be in "Demo Mode" - Check your owners manual.

In Whirlpool/Kenmore models this is indicated by a lower case "d" on the right side of the display panel.

Most/All function except the magnatron (heat) work in demo mode so you can can learn to use the oven without actually cooking food

To clear "demo mode" press the "kitchen timer" pad and hold for 5 seconds until the "d" clears from the display... you may hear 2 beeps.

on Jun 16, 2009 | Kenmore 60654 Microwave Oven

Tip

Or the microwave could be in "Demo Mode" - Check your owners manual. In...


If the microwave operates normally, but does not heath at all, then it can be the high voltage capacitor, the rectifier diode.or the magnetron.

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, your model number did not return any result, contact the seller here to purchase parts. (here in UK).

on Jun 16, 2009 | General Electric Microwave Oven

1 Answer

Siemens HF26066GB plate is moving when door closed and not moving when open


Have a shop look at this---there usually is a recessed safety switch inside the jam that will prevent the unit from working with door open--sounds like the problem may be with it.

Nov 03, 2012 | Siemens HF26066GB 1000 Watts Microwave...

1 Answer

Microwave will on but plate is not rotating


Hi.

If the microwave is heating up, then the problem is either the motor below the rotating plate, the control board or the wiring harness between control and motor. If for the rest the oven is functional, then the problem is almost surely the motor.

If you need parts or diagrams see this tip explaining how to find parts and diagrams for most appliances: Where do I find parts and diagrams for my appliance?

Regards.

Ginko

Sep 20, 2011 | LG Microwave Ovens

1 Answer

Cookworks signature microwave oven model:AC821AHT suddenly stop heating .,light comes on , plate rotates but does not heat anything.


Hi,


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

Basic
Microwave Oven Troubleshooting Tips

heatman101

Feb 26, 2011 | Emerson Black Microwave Oven

1 Answer

Model FMT148G1B2 - over range microwave will not heat food. Clock, lights, rotating plate in M/W all work, just will not heat/warm.


well that depends on the current. If the current is a fluctuating type then microwave wouldn't heat or else if high...please check..

Jul 23, 2010 | Frigidaire FMV156EM Microwave Oven

1 Answer

Plate does not rotate


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

Microwave Oven Basic Troubleshooting Tips

heatman101

lggklj

Jun 25, 2010 | Sanyo Microwave Microwave Oven

1 Answer

Microwave seems to work but doesn't heat up


HI, when the Magnetron becomes unstable, the microwave will not heat anything. simply replace the Magnetron. This device creates the heating action and it is damaged and not functional at this time.

Jun 01, 2009 | Sharp R-1870 Convection/Microwave Oven

1 Answer

Plate won/t rotate no reheating


PLease open the housing of turn table motor at bottom of the oven and check for the AC input voltages on motor terminals as specified on sticker on motor. for no heating please check fuse between high voltage transformer and high voltage capacitor. Also check high voltage Diode and Magnetron.Please please don't try to measure voltage on terminals of magnetron.

Jul 29, 2007 | Whirlpool MH6141XK Microwave Oven

Not finding what you are looking for?
Microwave Ovens Logo

Related Topics:

896 people viewed this question

Ask a Question

Usually answered in minutes!

Top Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

8930 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

yadayada
yadayada

Level 3 Expert

66126 Answers

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

Answer questions

Manuals & User Guides

Loading...