Maytag MMV4205 Microwave Oven - Answered Questions & Fixed issues
Maytag Microwave Oven (MMV4205AAW) won't power on.
You will need to replace the 20 amp.
ceramic fuse inside the unit. This is real easy and the fuse only cost around $10.00 You will find a break down of your unit at
www.partselect.com just enter your model number and a break down will come up. Your part number is PS2052772. You can also locate where the part goes. Good luck.
Hi. I accidentally ran
i personally do not recommend to a consumer to work on microwaves. they retain alot of voltage!
but will refer you here....
http://www.appliancepartspros.com/repair-help/maytag-microwave-mmv4205aaw-repair/mmv4205aaw-wont-start.html
I'm removing a Maytag microwave over stove model
Typically there is a metal mounting plate screwed to the wall and when you take the screws out of the cabinet above it it will tilt forward toward you and then you have to lift it off of some metal tabs that are on the bottom of that mounting plate. Lift up and pull away from the wall and let the cord pull out of the hole in the bottom of the cabinet. Good luck. I usually do that by myself and hook one arm under it and lift it up, but probably better with two people.
How do I change my MMV4205BAS to vent (recirculate) out of the front vent instead of the top vent.
Paul, if you look on top of the microwave before you install it you will see where the fan is located at the back edge. There should be 2-4 screws that hold it in place. Remove the screws and pull the fan up and out of the microwave and rotate the unit 90 degrees towards the front of the microwave and put it back in and replace the screws. That should be all that you have to do to get it to vent out the front.
How do i remove a over the stove microwave?
On a 1-10 scale- this is a 2.
place a cardboard box on the stove to support the microwave once it is free.
Remove power cord from the outlet in the cabinet over the microwave.
In the cabinet over the microwave, locate the 2 mounting screws.
Loosen each one about 6 turns- the microwave should drop down in the front by about 1/2 inch.
Once loose, you can remove both screws completely and allow the front of the oven to rest on the cardboard box.
While supporting the front of the microwave,have a helper remove the cardboard box.
Tricky part...while supporting the front - angled slightly down, lift hard under the rear of the microwave and pull toward you.
Have a helper feed the power cord through the upper cabinet bas as you bring the microwave toward you and slightly down.
Place the microwave on the counter- with a towel in place to prevent scratching the counter.
remove the rear-wall mounted support bracket.
Done
Mmv4205baw parts
If it went dead almost
immediately after pressing the Start pad, that's usually a shorted
high-voltage capacitor. See
http://www.microtechfactoryservice.com/cap_test.html
If it went dead
several seconds after pressing the Start pad, that's usually a
failing
high-voltage transformer. See:
http://www.microtechfactoryservice.com/xformer.html
If
it goes dead or blows the breaker (or GFI) when you plug it in or open
or close
the door, then there's a problem with a door switch or door switch
mount. See our help file on door switches
here.You can find helpful manuals, exploded views and parts lists
here.Our favorite supplier is the Pros here.
Maytag microwave keypad
see this causes and fix it. God bless you
Touchpad and Control Panel
If the microwave buttons don't work the touchpad and control panel assembly are probably defective.
Touchpad
If the microwave buttons don't work the
touchpad might be at fault. Generally speaking, if the
display is working and some of the buttons respond correctly but some
don't, the problem is with the touchpad.
User Control and Display Board
If the microwave buttons don't work the main
control board is most likely defective and will need to be replaced.
Main Control Board
If the microwave buttons don't work the main
control board is most likely defective and will need to be replaced.
Maytag microwave problem everything seemingly works but does not heat. Help
see this causes and fix it. God bless you
Diode
The high voltage diode converts the A/C power
output of the transformer to D/C, doubling the voltage to nearly 5,000
volts. This high voltage powers the magnetron which emits the energy
that cooks the food. If the diode burns out, a lower A/C voltage reaches
the magnetron, which is not sufficient to power the magnetron. When the
diode fails it is often visibly burned out. If it appears to be good,
it can be tested with a volt-Ohm meter capable of testing diodes. High
voltage diodes frequently fail and are one of the most common points of
failure in a microwave oven.
Door Switch
If the microwave does not heat, one of the
door switches might be defective. Microwave ovens normally have three
door switches, if any of them fail the microwave does not turn on and
does not heat. Check the switches for continuity with an Ohm meter.
Magnetron
If the microwave oven doesn't heat the
magnetron tube might have burned out. The magnetron uses high voltage,
high current DC power to generate the microwave frequency that cooks the
food. If the microwave oven is turned on when it is empty this can
cause the magnetron to burn out. Once it is burned out it has to be
replaced, it's not repairable.
High Voltage Capacitor
If the microwave doesn't heat the high
voltage capacitor might be defective. The high voltage capacitor works
with the high voltage diode to convert the output of the transformer to
DC voltage and to double the output voltage. If the capacitor is burned
out the entire high voltage circuit stops working properly. The high
voltage capacitor can be checked with a special VOM meter which has a
capacitance testing capability. Be aware that the high voltage capacitor
can retain a charge of more than 3,000 volts and can injure or kill a
person if not handled properly. Only trained technicians should perform
this type of testing.
High Voltage Transformer
If the microwave does not heat, the high
voltage transformer might be burned out. Microwave ovens produce a very
high voltage in order to power the magnetron antenna, which emits the
energy that cooks the food.
Thermal Fuse
If the microwave doesn't heat the thermal
fuse may have blown. It can be tested for continuity. Watch our fuse
testing video for more information. Thermoprotector
If the microwave doesn't heat the
thermoprotector may have tripped. This is a safety device to prevent the
microwave from overheating. It can be tested for continuity to see if
it's blown.
Main Control Board
If the microwave doesn't heat the main
control board may be defective. This is not common. When a microwave
doesn't heat the problem is usually within the high voltage circuit;
either the high voltage capacitor, diode, transformer or magnetron.
Keypad don't light up
see this causes and fix it. God bless you
Lights come on, but can not program unit, Touchpad dead If
you have a stuck key or non-responsive key, most of the time you will
have to replace the keypad for this microwave oven repair. If your
keypad is connected to your control board by a flat ribbon wire, try
disconnecting it and clean the silver contacts with an ordinary pencil
eraser. After cleaning, plug it back in and try it. If it doesn't fix
it, replace the keypad unit. Some units actually have keypad tests to
confirm your diagnosis of a bad key.If your keypad and control is
the same unit, replace that unit. Another note, unlike stove/oven
keypads and controls, most microwaves do not have error codes or tests
to distinguish whether it is truely the keypad or control. Most of the
time, it is the keypad that needs replacing, but a small percentage of
the time it can be the control. Check the tech sheet if they can point
you to the right part.
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