Question about Microwave Ovens

Open Question

Maytag mmv4205bas problem started when we shut the door and it sounded like the oven was still on. Once that quite the microwave will not heat food. Tested and replaced all thermal fuses and still not heating. if i put a jump wire across the fan therom (part #21) it will heat food but the fan runs the entire time. I know not to run it like that but did it for test purposes. Any Ideas what to test/ try next?

Posted by on

  • Josh Hambrick
    Josh Hambrick Feb 13, 2014

    It will also heat food if I turn on the hood fan but as soon as I turn the hood fan off it stops heating

×

6 Suggested Answers

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

MicrowaveSvc
  • 9047 Answers

SOURCE: GE Microwave problems after HV capacitor replacement???

The rectifier diode could indeed be bad. But first I would want to know what value (in uF) the old one was and what is the value of the new one? If they're too far off, the difference in the capacitive reactance could throw off the "tuning" of the circuit. The uF value of the capacitor is optimized in relation to the other components used in the system. Of course, you'd also want to be sure your new cap is at or slightly above the working voltage rating of the old one, too.

Posted on Jan 05, 2007

MicrowaveSvc
  • 9047 Answers

SOURCE: Microwave runs with door open

I would say you have a failing door switch or the mount which holds your door switch is loose or broken. In most designs, it is the upper door switch that will produce these very symptoms when it is intermittent or its mount is broken or loose. Opening the door while cooking (without first hitting the STOP pad) is the primary cause of door switch failure. Slamming the door, damage during shipping or transportation and sloppy manufacturing techniques or materials are the primary causes of trouble with the door switch mounts. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk

Posted on Sep 22, 2007

MicrowaveSvc
  • 9047 Answers

SOURCE: MIcrowave oven stopped heating - Whirlpool MH6150XMS

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: http://tinyurl.com/yzjozk

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

There should also be 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 20, 2008

rickzilla
  • 706 Answers

SOURCE: MAYTAG MMV4205BAS Running but not heating

If the food in the cooking compartment is not heating at all, then you may have one of several components related to microwave energy generation that have failed or became disconnected internally.
Magnetron Tube, HV Capacitor, Filament Transformer or any number of sensors that disable power to the system. The control board could also cause the system to noty function correctly.. You wanted general inputs.. there ya go.. LOL
Not sure I told you anything you didn't already know but you should ask the tech what he did after he gets it going...
Regards,
Rick

Posted on Nov 28, 2008

  • 1 Answer

SOURCE: Microwave won't heat food.

built in 3/94 is it worth fixing how much for magetron

Posted on Feb 12, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Maytag mmv4205bas


The problem is more than likely in the keypad control board, pricing on this part should be checked before going ahead with repairs.

Jun 29, 2012 | Maytag Appliances Over-the-Range Microwave...

1 Answer

I have a Haier microwave and tonight after heating some food, I went to close the door and upon closing it, the carousel started turning and it won't shut off.


It sounds like one of the door switches has become defective, each must be disconnected on the one side and tested with a digital meter using the ohms scale.

Jun 07, 2012 | Haier Microwave Ovens

1 Answer

Maytag UMV1152AA Oven starts, but table doesnt turn and it won't heat food.


will not shut off once you close the door after item was ready.

Aug 14, 2010 | Maytag UMV1152 Microwave Oven

1 Answer

MMV4205BAS no power. Was not using it.


Try checking the fuses under the button panel.

Jun 08, 2010 | Maytag MMV4205 Microwave Oven

2 Answers

Maytag MMV4205BAS stopped dead in the middle of a heating cycle. Unplugged and plugged back in. Oven is on the same fuse and it's fine. Any ideas?


There are several possible causes for a dead oven. Since yours quit in the middle of heating, I'd say it's most likely failure of the magnetron tube which supplies the microwaves. There's a safety thermostat on the tube which opens up and shuts off power if the tube overheats. Overheating is one sign of a tube that's gone bad.

There's really nothing user-serviceable in a microwave oven. Because of hazardous voltages inside and the possibility of microwave leakage, service should be left to professionals. Take the oven to a service shop for an estimate.

Jun 03, 2009 | Sharp R-930AK Convection/Microwave Oven

1 Answer

How do I mount a maytag mmv4205bas microwave? I bought a floormodel and they did not have the template.


Go to this website:
http://www.servicematters.com/maytag_library/html/index.html

-Once there click the link at the top "Literature by Model"
-Now enter your model number "MMV4205BAS" and hit enter or "go"
-On the page click your model number
-Click on the first row or the row containing the Document Type of Service Manual
-On page 51 of that PDF you will see the installation instructions for your microwave.

Apr 09, 2009 | Maytag MMV4205 Microwave Oven

1 Answer

Once I place food in to get re-heated, I noticed that my microwave did not heat the food, even though everything else worked...can you help


time for a new one. the microwave unit is dead, no the oven. the microwave unit is the heart of the oven. so, if that goes, everything else goes.

Apr 07, 2009 | Maytag MMV4205 Microwave Oven

1 Answer

MAYTAG MMV4205BAS Running but not heating


If the food in the cooking compartment is not heating at all, then you may have one of several components related to microwave energy generation that have failed or became disconnected internally.
Magnetron Tube, HV Capacitor, Filament Transformer or any number of sensors that disable power to the system. The control board could also cause the system to noty function correctly.. You wanted general inputs.. there ya go.. LOL
Not sure I told you anything you didn't already know but you should ask the tech what he did after he gets it going...
Regards,
Rick

Nov 28, 2008 | Maytag MMV4205 Microwave Oven

1 Answer

Maytag microwave mmv1153aaw


my guess would be the wave cover. sometimes they smoke and makes sparking sounds. does it still heat food?...if it does, then its not the magnetron.

Feb 18, 2008 | Maytag MMV4205 Microwave Oven

3 Answers

Microwave won't heat food.


built in 3/94 is it worth fixing how much for magetron

Dec 30, 2007 | Maytag MMV1153A Microwave Oven

Not finding what you are looking for?
Microwave Ovens Logo

Related Topics:

32 people viewed this question

Ask a Question

Usually answered in minutes!

Top Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9047 Answers

Devabhakthuni...
Devabhakthuni...

Level 2 Expert

225 Answers

yadayada
yadayada

Level 3 Expert

75807 Answers

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

Answer questions

Manuals & User Guides

Loading...