Sharp carousel microwave, Model Number R-1505F, is not running. It stopped in the middle of heating something up; however, the light, clock, timer and fan all still work. Checked the circuit breaker and everything is fine there.

OMG, thank you sooooo much. I have this same microwave (8 years) and 2 days ago it stopped working. I decided to go online and "troubleshoot" before I purchased another one. I'm SOOOO glad I did. You saved me between $200-$300.
Pamela Young

This is usually caused by either a bad bottom door switch or a loose bottom 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.

If the switch mount is broken, it's usually more economical and safer to add a dab or two of hot glue to the mount to secure the switch. Let it cool for about 30 minutes before using.

See http://www.microwavedisplay.com/doorsw.txt

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

We have the service / repair manual for this model and have uploaded it to our site here for free download to help you.

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.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller
[email protected]
http://www.microwavedisplay.com