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


In most cases this is due to a broken door opening lever or loose or broken door latch / hook parts. They can only be accessed and examined if the cover is removed from the microwave. In many over the range models, you can access the door parts by removing the control panel assembly. Sometimes you may be able to get it open by pushing up gently on the bottom of the door while pushing the button, in case you need to empty it.

Whirlpool... | Answered on Aug 28, 2010


The button assembly or the arm thats attached to the push button is broken. With the unit unplugged. Carfully take off the screws from the sides and around the back of the unit around the outside of the cover. Now once apart, DO NOT TOUCH any electrical parts. Look at the mechanism and see if you can see why the buttons not activating an arm to trigger the door latch. If you think you see why, Go to http://www.repairclinic.com and enter your model #.. Answer the questions and then a bunch of parts will come up. If they dont then get the tele # from there and call them. Depending on how old the oven is, you may want to consider a newer oven??. Good luck

Whirlpool... | Answered on Jul 30, 2006


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.

Whirlpool... | Answered 1 hour ago


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.

Whirlpool... | Answered on Apr 30, 2019


that could indicate bad door switch and getting it fixed costs around 50.00 here in the us . I paid to have mine done but within 2 weeks it blew up again and when I called the repair place they suggested I replace it as it would cost as much again or more . I replaced it with a much higher priced unit

Whirlpool... | Answered on Apr 09, 2019


DO NOT USE LED BULB
<https://producthelp.whirlpool.com/Cooking/Microwaves/Microwave_Product_Information/Replacing_the_Cooktop_Light_on_an_Over_the_Range_Microwave>

Whirlpool... | Answered on Apr 01, 2019


For most Microwave ovens push the clock button, enter time and clock button again. Some use start instead of second clock push.

Whirlpool... | Answered on Mar 30, 2019


Check the switch that's depressed when you shut the microwave door, it certainly sounds like that's where your problem lies!

Whirlpool... | Answered on Mar 24, 2019


The top door switch must be activated only when the door is closed or the mains fuse will blow everytime. It is a safety device, do not tamper with it! Purchase a replacement latch from a Whirlpool dealer or fleabay or espares etc.

Whirlpool... | Answered on Mar 03, 2019

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