Question about Microwave Ovens

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KitchenAid KBMS1454R 1000 Watts Microwave Oven

For the last year or so the display crystals would come and go.today the right side of panel quit.if i tab cook time to over 90 min.and hit start it will work.no display code .there are a row of small triangels on top 775 in the display ,a couple of more triangle on the bottom.when i depress the start ,cancle ,add a minuite.basicly from the knob to right the triangle go out.so it seem it is the membrane and the display?

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  • mikefoote Jul 06, 2008

    i went threw and tried that.i have a had a display problem for more than a year, but it had no effect on function.when this was sent in i had no function.today how ever it works?(heat only)

    when the clock set is held for 5 sec. and zeros apear.it will not set hour min .i unpluged the smaller center plug on the (i believe to be the register board)vertical board that conects the key pad and led display unit together interface board.at this time all key pad bottons chimed when depressed.i would think the membrane switch is good?i am thinking it would not be likly to have all the problems only beacause off a display?could it effect funnction some how?

    my wall voltage is 122vac,could this have an effect?

    thanks for the help,mike

  • William Miller
    William Miller May 11, 2010


    The first thing to try is a "hard reset". Unplug it from the power line for a minute, plug it back in, set the clock, then try again.

    Let us know if the hard reset doesn't fix it.


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  • Microwave Ovens Master
  • 9,047 Answers

Sounds like the keypad is okay, unless it might be intermittent.

Your wall voltage is within the proper range.

It sounds like it might be bad connections on the control board causing functional and display problems.

I work on control panels, actually, but I can't find any service data (yet?) on this model.

There should 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.

Did you find it?

Any chance you could scan and e-mail it to me?

Please feel free to contact me directly.

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

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Posted on Jul 06, 2008

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