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Sharp microwave & convection & turn table on model R1874F won't work

Sharp microwave & convection & turn table on model R1874F won't work

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  • Microwave Ovens Master
  • 9,047 Answers

That would be just a defective secondary interlock (bottom door switch) or its mount.

My help file on door switches is here.

The service manuals you need are here and here.

You can get other Sharp parts from Encompass here or you can call them toll-free at 866-779-5835.

Posted on Jan 09, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

MicrowaveSvc
  • 9047 Answers

SOURCE: Sharp Microwave turn table turning irregualrly

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

If yours 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. You may have to cut the cover off with snips, then use a screw when reassembling it.

You can probably find an exploded view and order parts by entering your model number here: http://www.searspartsdirect.com

Sharp parts are usually less expensive when ordered from Tritronics at http://www.wehaveparts.com

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

Posted on Jul 11, 2008

pgh_pa_guy
  • 2992 Answers

SOURCE: Sharp 930 AK Convection/Microwave Oven

When you close the oven door the latches operate a couple of interlock switches that control power. It may be that one of the door switches is bad or out of adjustment. It's also possible that one of the door latches is broken so it's not hitting the switch. There should be two door latches. Are they both there? This oven could be fixed by adjusting or replacing the interlock parts as needed. Because of concerns about microwave leakage from an improper door seal, you should have this oven serviced by a professional.

Posted on Jun 04, 2009

najah
  • 180 Answers

SOURCE: sharp R-1871 microwave/convection oven. Microwave will not work

This may be due to the microwave section not working. Check the high voltage diode if it is ok, replace the Magneton.

Posted on May 30, 2009

MicrowaveSvc
  • 9047 Answers

SOURCE: Sharp model R-1871 shuts off every 59 seconds

This is a problem in one of the damper-related components, either the switch or motor or the damper door may be binding.

The damper is a door inside that opens or closes depending on cooking mode. If the controller senses that the door is not in the right position, it will shut down the cook cycle.

Sharp models stop after 59 seconds.

See the attached sample drawing for a typical damper assembly.

We have the applicable service manuals for these models and have uploaded it to our site here and here to help you.

If a switch is all you need, we offer a universal type for only $5 postpaid which you can order here.

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

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

b27054b.jpg

Posted on Aug 30, 2009

Testimonial: "traced to motor for damper. Would not have had a clue without this information provided by fixya"

MicrowaveSvc
  • 9047 Answers

SOURCE: I need a manual for Sharp Microwave/ Convection R7A85

You can download that here free.

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

Posted on Aug 30, 2009

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Most likely the lower door interlock switch is bad. Cheap and pretty easy repair.

Martin Microwave Inc. sells the switches for around $5....

www.martinmicrowave.com

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