Question about Kenmore 66312/66319 Microwave Oven

1 Answer

Microwave will not turn off

The timer has expired; however the turntable still turns and the power is still functioning. Once the door is opened, the power stops,,,after the microwave door closes, the turntable turns, and the microwave functions.

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  • Anonymous Mar 24, 2014

    I have a Russell
    Hobb microwave when I switch it on at the mains the turntable turns and the light is on and only stops when I open the door I can't seem to stop it turning unless I open the door or turn it off at the mains ?

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  • Kenmore Master
  • 9,179 Answers

This is usually caused by either a bad door switch, a loose door switch mount, or occasionally a problem on the control panel.

Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.

Door switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. Other times, it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

One test that sometimes helps is to gently lift up (and/or push down) on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.

You can probably find exploded views and order parts by entering your model number here at the Sears parts site.

There may also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases.

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

Posted on Jul 28, 2008

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Oven is off door closed and turntable is still turning in reverse


Most likely, one of the door switches has become non-functional.
Its usually the upper one. Test it with an ohm meter to make sure it makes contact in both positions.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_29ad5d1dd86564b0

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You have a shorting membrane keypad.

If and when an oven is coming on or doing anything by itself, this is very dangerous and can result in a fire.

So until it is repaired, please leave it unplugged or leave the door open when it's not in use, and please do not leave it running unattended.

Feel free to contact me directly (and please include your full model number from the tag in or on the unit) for a free estimate and free tips & do-it-yourself advice.

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Generic advice follows.

Do you open the door while the machine is cooking? Do it a lot? For a long time (months)? Check your door safety interlock switches. The microswitches can not stand that type of abuse. I have personal knowledge on this. I try not to open the door until it stops, but it is hard usually to do that!!!

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heatman101

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Clock works, timer works-but turntable and other functions stoppe


you have a bad control board . this board had 2 relays one for the magntron and one for the turntable and the cooling fan together . when the turntable goes out so does the cooling fanm and the microwave overheats ...... there is no good fix for this , the control will cost more than a new microwave . please do not use with this happening . i have see them start on fire when it overheats . please be carefull good luck

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I have a Whirlpool AMW545 built in microwave oven. The turntable continuosly runs with the door shut when the microwave is not in use. The turntable will stop rotating if the door is opened.


the controller for the turntable is shorted out or welded its contact if its a relay. the door has safety switches that turns off the electrical connection to the turntable and magnetron once you open the door. you can trace the switch that runs the turntable. start from the power supply, goes to the door switch then to the controller before it goes to the turntable motor. i'm sure it has an electrical diagram at the inner wall of the cover.
i hope i was able to help.

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If we close the mircowave door the units start to run by itself. - it will not heat, but the light comes on and the turntable rotates it will not stop until we turn the power off - when power is turned...


i think you have a welded controller, either a digital one or a mechanical one. microwave won't run unless you switch it to run. the door switches are safety switches to turn off the microwave once you open the door. if you have a digital controller, you could have a welded relay, if you have a mechanical timer, it could be a welded contact at the timer. another thing is that it should heat what ever you are heating. if it is not heating, check if it has a fuse and if it is busted. some fuse are installed to protect only the magnetron that is why the light and turn table are still running. if there is no fuse to the magnetron, then check the diode from the capacitor to the ground. it could be open. if not then you can have a bad magnetron. i hope i was able to help.

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