Question about Sharp R-1480 Microwave Oven

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1994 sharp microwave oven carousel model r-1440 Microwave stays on.. i had to unplug it. when i plug it back in it starts running.. any ideas?

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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
  • 8820 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

  • 338 Answers

SOURCE: Sharp microwave oven LCD display malfunctions

you medd whats called a smart board. these go out a descent amount you can get and in stall the board yourself for maye around $100

Posted on Nov 30, 2008

MicrowaveSvc
  • 8820 Answers

SOURCE: Sharp microwave oven model r-1440 runs, but doesn't heat food

Assuming your inside light and turntable come on when you try to microwave, with the symptoms you have, I would most strongly suspect a bad magnetron or a loose and possibly corroded connection on the magnetron's terminal.

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.

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.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.gallawa.com/microtech/diode.html
(if it's not shorted or burned, it'sprobably okay)


http://www.gallawa.com/microtech/mag_test.html

The best place to order parts for this brand is Encompass (formerly Tritronics).

Or you can call them toll-free at 866-779-5835.


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

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Posted on Feb 08, 2009

  • 574 Answers

SOURCE: Sharp Microwave Oven Model R-403kk-T

Are you talking about the light inside the microwave? The front vent I think will allow you to get to the bulb. Should be a couple of small scrrews holding the vent cover on, remove them take vent off. Start it up again and see if the light bulb wiring or socket is arcing

Posted on Sep 17, 2009

  • 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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1 Answer

Sharp Carousel Microwave I heated some food. It worked fine, and shut off when it was done. I took out the food. When I closed the door the light stayed on. Light will not shut off. I tried...


Sometimes the switch in the door latch sticks. Mine did that and I ust closed the door with just a slight more force and everything started working fine.

Mar 03, 2015 | Sharp Microwave Ovens

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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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User Manual Needed for Sharp Carousel Microwave Model R-303CW


mcdevito75 here, Best Bet, contact Sharp online, try sharp microwave oven.com Or in any store that sells Sharp microwave ovens get contact info off that package.

Jul 07, 2010 | Sharp R-303CW Convection / Microwave Oven

1 Answer

Sharp Carousel Model R-1440 won't stop running


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.

Dec 12, 2009 | Sharp R-1480 Microwave Oven

1 Answer

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

Sep 28, 2009 | Sharp R-1480 Microwave Oven

1 Answer

Sharp Microwave Oven Model R-403kk-T


Are you talking about the light inside the microwave? The front vent I think will allow you to get to the bulb. Should be a couple of small scrrews holding the vent cover on, remove them take vent off. Start it up again and see if the light bulb wiring or socket is arcing

Sep 16, 2009 | Frigidaire FMV156EM Microwave Oven

1 Answer

Microwave Key Pad stopped working


buy a new one they are not expensive wal-mart has 1000w for about 80 bucks

Jan 25, 2009 | Sharp R-1874 Convection/Microwave Oven

1 Answer

Fans continues to run.


door switches or control circuit, may be loose contact or open check all wiring and circuit...

Dec 18, 2007 | Sharp R-1470 Microwave Oven

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