Question about Sharp R-4H07 Microwave Oven
Sharp R-4H07 does not come on or turn. Clock works, time elapse works and sounds when at 0.
You have a failed secondary interlock (bottom door switch) or its mount is loose or broken.
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.
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:.
At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.
If you only need a switch, you can order a universal type here for $5 postpaid.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Jan 12, 2009
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Posted on Jan 02, 2017
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