Question about Kenmore Microwave Ovens

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The microwave wont respond to the timer. It keeps cooking unless you open the door. After the timer runs out it seems like it cuts off but there is still a low buzzing sound and it is still cooking. Have ordered micro switches. Is this the problem,? and if so how do I get to them to replace them?

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Low buzzing can be a power relay or a (solid-state)
triac which both supply power in their own right to the power transformer to operate the magnetron tube,even though you say it quits cooking when you open the door,i would still check the micro-switches in the door for proper alignment and operation, because it can be a door switch mis-alignment or a leaking triac still supplying power to the unit

Posted on Jul 14, 2010

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