Question about Microwave Ovens

1 Answer

JennAir Microwave worked one minute then won't the next.

My JennAir just quit working last night. The control panel still works. The time is displayed and you can select a cook time but the microwave never comes on when you hit the start button. The timer begins counting down the time and the light comes on, but nothing happens. Any advice would be much appreciated. I saw someone else had this probloem but I didn't see any answer. I would greatly appreciate any suggestions you could give me. My husband put in a new timer when it went out but neither of us know what this could be. Thank you for any help you might could give us.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 139 Answers
Re: JennAir Microwave worked one minute then won't the...

If this microwave is more than a couple of years old, it's possible that the magnetron tube or a rectifier has burned out. You'll probably need to take it to an experience microwave service technician to get a diagnosis.

Posted on Jan 17, 2008

1 Suggested Answer

  • 8795 Answers

SOURCE: jennair

Do the inside light and cooling fan come on when you press Start?

If so, the problem is likely to be in the high voltage section.

If not, then the problem is likely to be related to the door switches or possibly the controller.

Generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part (such as a shorted diode)

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, 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:

Your model may also have a "mini-manual" hidden inside the unit behind the control panel, which is very helpful when troubleshooting.

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

Posted on Mar 30, 2008

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

Replaced 20A fuse - now display blinks

Here is the parts page for your unit with an exploded view and parts list It is possible the switch is bad the look at part number 1-6 hope this helps.

Nov 08, 2013 | Sharp R-9H84B Microwave Oven

1 Answer

JennAir Microwave works perfectly but won't quit running.

One or two of the micro switches have failed, you will need a professional to remedy the situation.

Apr 03, 2012 | Jenn-Air Microwave Ovens

1 Answer

Our home lost power yesterday, now microwave will not work. Clock is working but it's like the panel is locked. Turned off breaker to try to reset and now on display it indicates 8-:44. Suggestions?

You should be sure that you leave the breaker off for about 15-30 seconds when doing a reset.

If it still won't work right, you either have a defective board or a shorting keypad.

Try the rest several times and note whether the display comes up that same way every time or what.

We can help you with a repair either way.

Details of our service are at our Web site, along with a video showing how to remove a typical over the range control panel assembly in under 5 minutes.

Feel free to contact me directly with your brand, full model number and symptoms.

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

Oct 11, 2011 | Whirlpool GH7145XF Microwave Oven

1 Answer

During cooking last night - (about 20 seconds into cooking a piece of fish on a microwave safe plate), it sparked, banged and quit working. Control panel is out. Can this be fixed, or should I purchase a...

I worked for a place that repairs appliances and rule of thumb is if a microwave sparks dont bother trying to fix it just replace it.Microwaves work with so many watts sparks could mean a resister is shot witch could be very dangerous and if it stopped functioning thats probably the case.

Jul 17, 2011 | Whirlpool MH1160XS Convection/Microwave...

1 Answer

Oster ogf41101, unit display doesn't work, when

If there is no heating please do not switch on unless you have confirmed the fault. It is possible that the Magnetron is faulty, the temperature cut off is faulty or the main capacitor is short. It is also quite possible that insect can get into the oven and create soft spots. When you switch on these will create a short and make the voltage jump and in the long run damage the magnetron.
So Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off.
Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if contact is not through the microwave will not work.

Now keeping clear of the microwave, switch on, use a cup of water inside to test.
If you notice any sparks shut off as the magnetron or the main HT capacitor can be faulty. replace with same type.
If there is heating without any issues, you can use the microwave safely

Jun 14, 2011 | Microwave Ovens

1 Answer

Lost power last night - now Microwave won't work - control panel is not lit - unplugged for 10 seconds and replugged in - socket has power

Hi, W/D here.

Leave unplugged for a longer time, say 5 minutes. I have done this twice on my own, and it has worked, but it took about 5 minutes.


Feb 09, 2011 | Jenn-Air JMV8166BAS Microwave Oven

1 Answer

We were cooking a dish and stopped it at the mid point and to add some sauce and it would not restart. Clock and everything is out. Everything esle in house works, no circuit breakers were off. The Jenn...

The same thing happened to ours last night. We went to add another minute of cooking time and realized the oven was dead - no clock, no display of any kind, and no more cooking!

I've verified the power outlet is OK. Ideas???

Feb 19, 2010 | Jenn-Air M170 Microwave Oven

1 Answer

My JennAir M170 just quit working, nothing.........bought in 1998. Time for a new one? If so, how do I go about just getting the micro for the combo unit? Or do I have to buy an whole new combo unit?

I would at least have a service tech look at it. Here are the comon items to check most of the time when a microwave just quits. 1 the internal fuse. 2 the power diode 3 the large capacitor 4. door open / closed micro-switches 5 the magnetron. The least likely suspect is the control panel yet can also cause the problem. You should still be able to keep this unit in service cost effectively. Until I had it checked out I would not give up on it.

Jan 09, 2010 | Jenn-Air M170 Microwave Oven

Not finding what you are looking for?
Microwave Ovens Logo

Related Topics:

183 people viewed this question

Ask a Question

Usually answered in minutes!

Top Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

8795 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Barrett Palumbo
Barrett Palumbo

Level 2 Expert

1772 Answers

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

Answer questions

Manuals & User Guides