Question about Microwave Ovens
Our microwave (Sharp R-1451) has been running fine for years. Yesterday it has begun to run (makes loud fanlike noise different than oven fan noise), when the door is closed. In addition, the keypad is nonresponsive for the most part. For instance, I have unplugged and can reset the time, but can't set a cook time or Sensor Reheat, etc.
This is usually caused by either a bad door switch, a loose door switch mount, or sometimes a problem on the control panel.
I would suspect the door switch mount has a broken tab allowing the switch to swing down when the door is closed, not allowing it to really be activated.
Also, even though a door switch clicks, it may still be bad inside. Its continuity must be checked.
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.
If you or a friend 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: http://tinyurl.com/yzjozk
You can order Sharp parts from Tritronics at http://www.wehaveparts.com
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Mar 02, 2008
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Posted on Jan 02, 2017
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