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Sharp Microwave Carousel Fan won't turn off

The fan on my microwave turned on by itself and won't turn off, any suggestions on how to fix it?

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  • William Miller
    William Miller May 11, 2010

    Please reply back with your model number so we can help you.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

MicrowaveSvc
  • 9047 Answers

SOURCE: Sharp Carousel Microwave door latch stopped working door won't stay closed

Normally the problem is not the spring, but a broken spring mounting tab on the door latch head (hook) assembly or the inner door panel.

If it's the door panel, it's usually easier and cheaper to use epoxy and some kind of hardware to fashion a new spring mount.

The door latch head (hook) is easy to replace or repair if that's the issue.

We have *critical* safety & disassembly info at our site, linked here: http://tinyurl.com/yzjozk

We also have this full service manual at our site: http://www.microwavedisplay.com/R1480_R1481_R1482_sm.pdf

Normally you have to separate the door panels (as shown in the attached photo) and then you'll see the screws you need to remove.

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

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Posted on Apr 18, 2008

  • 1 Answer

SOURCE: Sharp Carousel Microwave door latch stopped working door won't stay closed

Microwavesvc, that's what I've had happen with my sharp also, I carved a hook out of a piece of plastic and then epoxied it in, and haven't had any more problems with that.

Another problem I've had with the sharp (that just reoccured, I'm trying to figure it out) is that the micro-switches that the door latch push have gone bad. Originally just one went bad and I replaced it, now the micro has the light and fan on, and won't recognize being closed...

Posted on Jun 11, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: R-4H84 Sharp Carousel II microwave oven stoped working

A microwave can be dead for many reasons.

The fuse is normally located on the floor of the chassis behind the control panel or between the door switches.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

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

Posted on Jun 23, 2008

  • 2 Answers

SOURCE: Where is the light bulb in an old Sharp Carousel Microwave?

Microwave_svc's site is awesome! I was able to get all the help I needed for a similar Sharp Carousel microwave. My bulb was simply loose in the socket base causing intermittent bulb lighting. Microwave_svc's helpful links got me to the service manual and, along with a nice set of "tamper-proof" screw compatible TORX bits I bought at HarborFreight, I was easily able to get cover off, remove bulb socket, tighten bulb, re-install bulb socket, button unit back up, and, voila, the light now works without intermittent blinking. FIXYA!!!!

Many thanks to guru microwave_svc!!!!!!!

Posted on Oct 13, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: sharp carousel microwave doesn't spin

The turntable system consists of the motor, the coupler, the turntable support with rollers, and the tray.

You can see and hear a video of how a turntable motor should sound when you rotate it by hand.

If yours is not set to be off via the control panel, and it won't rotate or it sounds like it's grinding, etc., you may have a bad motor or plastic coupler.

To replace either, you need to unplug power, then remove the bottom cover of the oven. In some brands, you have to cut the motor cover off with snips, then use a screw when reassembling it.

The best place to order Sharp parts is Tritronics. You can also call them at 866-779-5835

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

Posted on Nov 21, 2008

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Keith, I am going to assume that this is happening shortly after you may have used the microwave and after sitting for a little while the fan comes on. The fan blows across the transformer and magnetron to help keep them cool. If there is not good air flow the fan will come on and run to get them cool even after the timer has stopped the cooking cycle. If this is a countertop type microwave I would suggest turning the microwave around and check the vent area where the fan is mounted and see if there is a build up if lint and dirt on the vent holes. If there is clean it off with a soft rag and hopefully that should take care of your issue. If this is an over the range microwave/range hood combo you will need to check your filters and probably clean or replace them. Hope this helps.

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You can tell if microwaves are being emitted if you get warm standing in front of it (seriously). But I wouldn't recommend that unless you want to cook yourself.

First thing that comes to mind is the door interlocks are out of adjustment or bad. Home microwave ovens are not supposed to operate like that. Some commercial models start the fan right away and run it after the cooking cycle is completed but I've never heard of a consumer model that does that.

Find your closest servicer here and have them take a look.

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Hope that helps.

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