Question about Microwave Ovens

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Microwave lights up, timer works, not carousel or cooking

Sharp SN R-510HKF M# 428742 Made in 2005, purchased in 2006
The microwave inside light comes on when you punch in the time and power desired and hit start;
but the carousel does not turn and there is no noise or cooking.
My husband fiddled with the door latch and it did respond for a short moment; otherwise it has not worked; all the panel lights work all the time, timer, etc..

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This is usually caused by either a bad door switch or a loose door switch mount, which are pretty simple problems to fix.

Even though a door switch clicks, it may still be bad inside.

Door switch or mount trouble is usually caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto 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's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

One test that sometimes helps is to gently lift up (and/or push down) on the door or handle as you try to start it. If it works or tries to work, then it's a door switch mount or door alignment issue.

If you or someone you know 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:.

If you only need a switch, you can order a universal type here for $5 postpaid.

Otherwise, the best place to order Sharp parts is Tritronics.

You can also call them at 866-779-5835.


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 Dec 08, 2008

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