20 Most Recent Whirlpool MT4070SK 700 Watts Microwave Oven - Page 3 Questions & Answers

check its cooling section

Remove mounting/attaching hardware and slide it out sufficiently to disconnect power, then remove the disconnected unit.

You don't

The control board could be defective.

Several free magicook manuals at the link below: https://www.manualslib.com/manual/1072602/Whirlpool-Magicook-20g.html

Have to replace the inner door, some of those are available as a complete door assembly. Unit must come down and door unbolted from cavity of unit. Write down your model number, it is on the wall inside the unit. Take that number and call an appliance part store and give them that number, maybe look it up online and see what you find.

https://www.youtube.com/watch?v=9dNUeDf90Vo

try replacing thermostat,or main board in the last

may not be exactly your model. but if you want better you can figure out how to search online as I did. https://f01.justanswer.com/smitty1486/86e247eb-1e63-4969-a82b-0585720d07a2_WMH1164XVS0_Tech_Sheet.pdf#

Yes, I see and repair this controller problem on a regular basis. The total cost would be $54.95. See details, instructions, and forms at my site.

Ed Miller
[email protected]
http://www.MicrowaveControl.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

Possible similar model (no letter Y) that may have documents or other contact information to request assistance. https://www.searspartsdirect.com/model/1vtx76no20-001198/whirlpool-wmh76719cs3-microwave-hood-combo-parts?page=2 Two free online manuals: https://www.manualslib.com/manual/1168264/Whirlpool-Ywmh76719.html https://www.manualslib.com/manual/994280/Whirlpool-Ywmh76719cs.html Different model with that error message that may be similiar: http://www.fixya.com/support/r25791095-error_code_f8e5

Usually they are T-15 Torx security screws. (If not T-15, then T-20)

On this microwave, you just need to enter the correct cooking time and power level. This will clear the previous time and power level that you entered. (This works since you need to use the Options button to do multi-stage cooking.) The manual for the Whirlpool WMH53521HZ is available on the product site: https://www.whirlpool.com/kitchen/cooking/microwaves/over-the-range/p.2.1-cu.-ft.-over-the-range-microwave-with-steam-cooking.wmh53521hz.html . Scroll down to the Manuals & Guides section or use the link and expand the section. The current link to the manual is https://www.whirlpool.com/content/dam/global/documents/201705/UserGuide-W11047549-RevA.pdf . I hope this helps. Cindy Wells (Note: the -4 indicates a minor difference between versions. Sometimes it indicates the color of the microwave.)

I am not sure - if there are no small plastic plugs or pieces of trim hiding the retaining screws (most sensible assumption) the door interior will need dismantling to access the screw heads. A microwave door is often made up of several layers to provide light weight with rigidity and provide adequate screening against microwave escape and if dismantling is possible (not always) it really should be entrusted to a professional or at least applying the utmost attention to detail.

try an unplug reset I can't find error codes

door switch is misadjusted. You may have gotten the one I sent back.

My guess is the bulb burned out. You can probably find the owner's manual online to see if there are replacement instructions.

I do not know what procedure you used to replace the door, but if the buttons and display were working fine before you replaced the door then it seems that there is a plug not plugged into the control display panel. Other than that the low voltage power supply may not be providing the needed voltage for the display and only for the logic circuits which are a different voltage. With the microwave unplugged, take the cover off and look at all the connectors and make sure that they are plugged into something and none that are not plugged in. They should all go somewhere. To answer your original question, there is only one main fuse to the microwave. The circuitry in the control panel operates on low voltages +/- 5 volts or +/-12v so that part is not fused. What I recommend also is to go back mentally through the procedure you used to replace the door and that may give you a clue as to what you unplugged, although you should not have to unplug anything.

Utube

Open the oven door. b) Unplug the microwave oven for 2-seconds and plug it back in. ... The sears manual refers to F6 error as a F6 -Microwave Relay Failure, which would explain why the motor is "humming" The relay is part of the PCB and may require you to get a new PCB The F6 error indicates a relay on the control has failed. You can try to unplug the microwave for a few minutes and then try it again. If the error repeats then the control will have to be replaced. Microwaves are not good do-it-yourself projects and I recommend a technician check and repair this problem. Microwaves are inherently dangerous to service. Internal capacitors can retain a lethal electrical charge even when the microwave is unplugged. A microwave radiation leakage test must be performed on the unit following any repair. I recommend calling a service technician to repair this type of problem.