Question about Sharp Microwave Ovens

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R-305K Sharp Microwave has the interior light staying on after the door is closed. On inspection, the top switch has nothing to trip the switch. Seems something is missing between the door latch and

Microwave is 4 yrs old. when the top switch is depressed with a screwdriver the light goes out.

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  • Hazel Kirschenmann Feb 15, 2012

    I checked the spring in the door and it is fine.. The top hook does not trip the switch it should control. Part 4-9 on the drawing does not show any other parts that control the switch.

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  • Expert
  • 76 Answers

This could be caused by a faulty interlock mechanism. Check this first.

Posted on Feb 14, 2012

5 Suggested Answers

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Posted on Jan 02, 2017

MicrowaveSvc
  • 9047 Answers

SOURCE: Sharp R-308J microwave door will not latch

If you gently push up on the door latch head assembly (hook-like devices sticking out of the door) there should be spring tension. If they just flop right up, the spring is off inside.

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.

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.

4c9c250.jpg

Or you can watch a YouTube video (not a video I made) here that demonstrates how it's done.

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.

Posted on Jan 12, 2009

  • 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: door latch on sharp 1480 microwave over the range oven

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 the service manual for this model and have uploaded it to our site here to help you.

You will need the free Acrobat Reader to view or print it.

The best place to order Sharp parts is Tritronics.

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.

Or you can watch a YouTube video (not a video I made) here that demonstrates how it's done.

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

0ff6f09.jpg

Posted on Sep 16, 2008

  • 8909 Answers

SOURCE: When I press start on my sharp R-305K microwave

Dead appliance, power on wall outlet.

YOUR SAFETY IS PARAMOUNT!

Attempt this only if you are competent.

If your appliance has absolutely no functions at all, remove it from the mains supply, remove the case and see where the mains lead goes in to the appliance and follow the cable until you find the main fuse.
ONLY USE THE SAME TYPE AND RATING OF FUSE TO REPLACE IT.
The usual cause of this fuse failure is the door switches are contaminated or sticking. Check the door switches before putting power back on to the appliance.
Hope this helps.

Posted on Feb 24, 2011

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Dead appliance, power on wall outlet.

YOUR SAFETY IS PARAMOUNT!

Attempt this only if you are competent.

If your appliance has absolutely no functions at all, remove it from the mains supply, remove the case and see where the mains lead goes in to the appliance and follow the cable until you find the main fuse.
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The usual cause of this fuse failure is the door switches are contaminated or sticking. Check the door switches before putting power back on to the appliance.
Hope this helps.

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