Question about Sharp Microwave Ovens

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Microwave/convection oven simply lost power. not the outlet checked with hand mixer and worked find. is there a fuse that went out? how much to repair? thankx!

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The fuse is usually located either between the door switches or on the floor of the oven behind the control panel.

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.

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 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 may have the service manual which we can upload for you. Please reply back with your brand and model number so we can help you.

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

Posted on Jul 06, 2008

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4 Answers

No Power


hi,

Did you try replacin the fuse.It might have blown.

Jul 03, 2008 | Sharp R-930AK Convection/Microwave Oven

1 Answer

No power checked outlet and power is on


HELLO.

This is the way out of the problem.

The outlet is on power,the power problem is from the microwave.

check on the back of the microvave to locate the fuse that control the supply of power to the microvave.

Change the fuse because it is unable to control power supply.

Then plug the microwave to the outlet.

Thanks .

Sep 19, 2011 | GE JVM1790SK Convection/Microwave Oven

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No power to microwave JVM1790SK ...checked outlet and it is live


HELLO.

Since the outlet is live,the power problem is from the microwave.

check on the back of the microvave to locate the fuse that control the supply of power to the microvave.

Change the fuse because it is unable to control power supply.

Then plug the microwave to the outlet.

Thanks .

Sep 19, 2011 | GE JVM1790SK Convection/Microwave Oven

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Kenmore elite microwave/convection oven just lost power and will not come back on. have checked the the outlet and it works.


Hi,


Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101



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Dec 26, 2010 | Kenmore Microwave Ovens

3 Answers

Built-in Sharp Carousel II Microwave Convection Oven died.


There are a couple of safety thermostats in the oven to shut down power if something overheats. One is on the magnetron tube (the microwave source), the other is on the cooking cavity. These sometimes go bad. There's also a power line fuse that may have failed, or become loose in its mounting clips. These can be tested with an ohmmeter; they should all measure very close to zero ohms if they're good.

Another possibility is that the control circuit board in the oven may have failed. I have worked on several Sharp ovens where the power transformer for the board has gone bad for no good reason. If the board goes bad the oven may appear to be dead as well.

Microwave servicing is best left to professionals. If you're thinking of keeping this one, take it to a service shop (or call for home service) and get an estimate. Then decide whether to repair or replace.

Hope this has helped a little. Thanks for using Fixya!

Feb 02, 2010 | Sharp R-1874 Convection/Microwave Oven

1 Answer

Unit lost power


there is an internal ceramic (white) fuse in the microwave just under the cover on the right side

May 04, 2009 | Microwave Ovens

1 Answer

Microwave/Convection just quit


Is this oven new? IF NOT HOW OLD?

Did you plug the oven into different outlets or try another appliance to make sure the outlets were working?

Sometimes two or more outlets can be on the same breaker, or on the same GFCI, and if either tripped, the oven of course would not work in either outlet, something to double check.

If it is new, of course take it back. If not and you prove you have power, there is a fuse in about every microwave I have ever looked in.

get the manual or download one, and it will tell you where to look for the fuse, it is common for a fuse to blow in these ovens, so more searching is needed before the next step.

Will

Jan 04, 2009 | Microwave Ovens

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