Question about Cuisinart CMW-100 Microwave Oven

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Runs when door is closed,stops when open!Checked the three door switches;all good.The mw is 5 years old so anyone have suggestions as i would be thanking U in advance

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It is possible that a relay on the control board has stuck in the closed position. You can try tapping the relays on the main control board and this sometimes breaks them free. It still may be one of the door switches but I would suspect the control board or possibly a stuck start pad on the touch panel.

Posted on Apr 24, 2015

  • Linwood Tatum
    Linwood Tatum Apr 27, 2015

    IT's working. Thanks for the help.LT

  • Ty Roshdy Apr 28, 2015

    Glad to help. I have ran into this before.

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There can be two chances that the MW works by itself when the door is closed. It can be due to a relay or the door leaf switches being jammed.
remove power and try to close and open door for several times.If this wont work, remove power and tap on the Printed circuit board and check again. If there is no result even after repeating this the fault is in the PCB wherein the output to the relay is short or there is a constant output to trigger the relay.
Need to check by tracing the output or replacing the PCB.- Try if you can swap.

Posted on Apr 30, 2015

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Check door switch

Posted on Apr 28, 2015

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