Question about Sharp R-1480 Microwave Oven

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Sharp Carousel Model R-1440 won't stop running

I have a Sharp Carousel Model R-1440 and it won't stop running after I hit the stop button. I tried unplugging the appliance and it will stop but once I plug it back in, it just runs and runs. The carousal is not moving while microwave is on.

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  • 9,125 Answers

It may be a sticking door switch (upper or lower, not the middle one) or the mount of one of those switches may be loose, broken or out of alignment.

See these files:
http://www.microwavedisplay.com/safety.txt
http://www.microwavedisplay.com/disassembly.txt
http://www.microwavedisplay.com/doorsw.txt

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.

Then you can get to the switches.

Or it may be a sticking relay on the control board. We regularly repair these control units for customers nationwide by mail for $39.95 postpaid in about a week or so with a one-year guarantee.

If during this unwanted operation the oven lamp, internal cooling fan, and stirrer are all stuck on, but the turntable is not on moving and the oven is not actually cooking, then I would suspect relay RY1 on the control board is stuck.

That's what I suspect in your case.

Posted on Dec 13, 2009

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  • 1 Answer

SOURCE: Sharp Carousel Model R-1440 won't shut off

Take it immediately to a local Microwave repair shop...looks like one of the circuits may have gone...otherwise switch off from mains

Posted on Oct 20, 2009

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Yes your oven's controller is probably malfunctioning you need to replace the SYSTEM BOARD but I personally suggest to buy an other oven.... the system board will be hard to find and expensive...

See if other electronics is acting funny since the power loss... you could CLAIM the damage from the insurance company

Good luck!!

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I have the Sharp R-1440 carousel microwave oven and it won't shut off when I close the door. Do you know how old this oven might be? Model R-1440; Serial 123662


Check and change door interlock switches or check for condensation problem on control panel, (internal).
Hope that helps.

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I would expect that you have a shorting membrane keypad.

The original part number for the plastic frame with keypad was FPNLCB074MRK0 but it is no longer available.

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

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Oct 14, 2009 | Sharp Microwave Ovens

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Microwave locked


On the R1490-series, you press Custom Help > "1" > Stop/Clear to turn the child lock off.

This may work for you, or press Custom Help and look for a lock option.

If your model does not have a Custom Help button, please reply back with your exact model.

We're happy to help and we appreciate your thoughtful rating of our answer.

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Fans continues to run.


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