Question about Maytag Microwave Ovens

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My Maytag microwave (MMV4205BAS) display lights are dim. What should I do?

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  • 9,047 Answers

It may be a weak VFD tube or it may be that the rear of the display window and front of the display glass are very dusty.

Sometimes you can clean it inside to brighten it up.

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.

Then you can detach the keypad connector (as per attached photo) then remove the control panel screws.

Be careful not to crack the glass display when handling it, or it's a goner.

Then you can use a soft cloth (not a paper towel) and a mild cleaner (not ammonia-based) to clean the front surface of the VFD display glass and the rear side of the clear bezel (display window) that's attached to the keypad.

Direct spraying of cleaners on the keypad and steam from the cooktop can damage the controls.

I always recommend that you spray non-ammonia cleaner on a soft cloth (not a paper towel which can scratch) and gently wipe the keypad.

My Maytag microwave (MMV4205BAS) display - 40716d4.jpg

If that cleaning didn't help, then you have a weak VFD.

On this model, the VFD is not available, so you would have to order a new circuit board for it.

You can find links to helpful exploded view diagrams and part ordering help here.

I'd recommend that your bookmark this link to your favorites.


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

Posted on Aug 06, 2010

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It depends on your full model number:
You can find helpful exploded view diagrams and order parts and accessories by entering your full model number here.

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

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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.

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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

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