Question about Sharp Microwave Ovens
This is usually caused by either a bad door switch, a loose door switch mount, or occasionally a problem on the control panel.
Even though a door switch clicks, it may still be bad inside. Its continuity must be checked.
Door switchor mount trouble can be caused by slamming the door or by opening thedoor while it's cooking without hitting the Stop pad first.
There areplastic mounts inside the microwave which hold the door switches andonto which the door latches lock when you close the door.
The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.
Sometimes it'sa broken tab on the switch holder, allowing the switch to rotate justout of position. This tab can be hard to see, since it is under thebottom edge of the switch.
One test that sometimes helps is togently lift up (and/or push down) on the door or handle as you try tostart it. If it works or tries to work, then it's a door switch mount ordoor alignment issue.
If you or someone you know decide to lookinto it, we have critical information on safety, disassembly and doorswitches at our site, and our link is at our listing here on FixYa:.
You can usually find exploded views and order parts by entering your model number here at the Sears parts site.
The best place to order Sharp parts is Tritronics.
If you only need a switch, you can order one from us for $5 postpaid.
If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Sep 13, 2008
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Quite often this is due to a bad door switch. Opening the door while cooking (without first hitting the STOP pad) is the primary cause of door switch failure.
If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk
We also have the complete service manual for this model at our site.
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