Question about Kenmore Microwave Ovens

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Kenmore microwave runs but doesn't heat. clicks 7 or 8 times evey 30 seconds

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  • melowder Apr 29, 2010

    Found the problem myself. The lower door interlock was misadjusted.

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Hello,
First it is important that you learn the proper safety precautions because repairing a microwave can be very dangerous. You should always be sure:
· The appliance is not plugged in
· You don’t touch any wiring or components until you discharge the high voltage capacitor
· Don’t work alone
· Remove watches and other jewelry

DANGER: Microwaves produce lethal voltages. They can kill.
This Will let you to Help more..Click here

If your microwave looks and sounds normal but isn’t producing any heat, you should check the internal door switches, the high voltage circuitry and the circuit board for problems. You may need a certified technician to help you make these repairs.
If you are unable to adjust the power level, there may be a defective triac or a problem with the circuit board. If the carousel inside your microwave won’t turn when you run it, the small motor that operates it may be broken.


HIGH-VOLTAGE TRANSFORMER: When the voltage transformer fails, it will often emit heat and smoke, but with the fan running, you might not smell it. With the cover off, it may be easier to smell. Also, you can look at the windings and see if they look discolored due to heat. If a high-voltage transformer is shorting, it can blow the fuse a few seconds after pressing the start button to start a cooking cycle.For More Click here
In case Of loose Connection.. >If the connectors feel loose, and any burning or melting seems minor, you should be able to carefully tighten the connectors with a pair of pliers, then sand or file the rusty-looking terminals of the magnetron until they are clean and shiny.
>If the burning is more serious, the connectors may need to be replaced. They can be obtained from home improvement centers and auto parts stores. They are 1/4" connectors and can be squeezed in place onto stripped wire with proper crimpers or a pair of pliers. Another option is to cut the connectors off the wires and solder the wires directly to the magnetron terminals. If this is done, do not apply heat to the terminals any longer than necessary...
>If the burning is really bad, the plastic surrounding the magnetron terminals is charred or melted, the magnetron may need to be replaced. Thanks For Contacting FixYa...

Posted on Apr 29, 2010

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Posted on Jan 02, 2017

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First you need to determine when that happens if it's actually heating, or if it's just the fan and turntable coming on. (I suspect the latter).

You can test it by putting in a cup of cold water and letting it run (with yourself standing to the side of the microwave) for about 30 seconds.

Then unplug the microwave and check the water for warmth.

If it IS heating, then you probably have a control board issue and we can help you here.

If it is NOT heating, as I suspect, then I think it is a door switch or switch mount issue.

See these files:

http://031d26d.namesecurehost.com/mwd/safety.txt
http://031d26d.namesecurehost.com/mwd/disassembly.txt
http://031d26d.namesecurehost.com/mwd/doorsw.txt


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

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Hi alykat737,

This error code F7 on KitchenAid microwave is about a function key that is stuck on ERC. You will have to Replace control board (also called ERC or clock) to fix the problem. In case you will have to buy a replacement part you may contact Sears for the replacement part at 1-800-252-1698; M-F 6:30 AM-10:30 PM - Sat 7:00 AM-9:30 PM - Sun 7:30 AM-9:30 PM - All times Central.

Hope this helps.

Thank you for using FixYa.


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Unplug the Micro for about 5 minutes and plug it back in this will reset the board,it may have picked up interference from other electronics.If the issue continues have a technician look at it.

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