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Sharp Microwave Model R-1471A

Loss of Power

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A microwave can be dead for many reasons.

You can find a wiring diagram for model R1471 at our site:
http://207.234.249.73/mwd/r1470_wiring.jpg

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.

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

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 Mar 30, 2008

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Loss of power

Posted on Nov 26, 2008

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Posted on Jan 02, 2017

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1 Answer

How do i change the power setting on a Sharp carousel microwave


Which model of Sharp microwave do you have?

For the SMC1441CB, after setting the cook time, press the power level button and then the appropriate digits for the percentage of full power to use. For full power, press power level then 1 and then 0. For 50% power, press power level then press 5.

For the SMC0710BB, after setting the cook time, press the Power button until you see the desired power level displayed on the LCD screen. Press Power once to get 100% power. Press Power 6 times to get 50% power.

For the R-659YW, you set the power before setting the cooking time. You press the Power button several times to get to the desired power level. Pressing Power 7 times will have the microwave cook with 40% of its full power level.

Many current Sharp appliance manuals are available on their product page or the Sharp support page. The current Sharp microwaves are listed here: http://www.sharpusa.com/ForHome/HomeAppliances/Microwaves/Models.aspx?facet:configurationfilter=Countertop . Other appliance manuals are available when you enter the model number in the search bar at http://www.sharpusa.com/Support.aspx .

I hope this helps.

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SHARP MICROWAVE OVEN Parts ' Model r209ak ' Sears ...

www.searspartsdirect.com/model-number/r209ak/0958/0123245.html
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I have a 1995 Sharp Carousel R-1440. Our power went out then when it came on our microwave it no longer working properly. the clock works but when the door is closed the cooling fan starts running- it...


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

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Can't find the power loss in microwave after fuse, switch check.


Sounds more like the transformer could be bad. Very easy to check. See my tip at http://www.fixya.com/support/r4318968-check_high_voltage_transformer_in . Let me know if you need more help.

hardrocko

Thanks for using FixYa and for the generous rating.

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1 Answer

How can I find my fuse on my Sharp Carousel R-1471A


your fuse holder appears to be behind the control panel area. you may be able to just remove the grill above the door and control panel to access the screw that holds the control panel in place, then swing that down and see the fuse and holder.
you may however need to lower the unit from its mounting place to remove the outer cover to access this fuse..
hope this helps,
best of luck,
ttfn

Oct 30, 2009 | Sharp Microwave Ovens

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