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My toshiba microwave ER 674 has worked without problems until yesterday when it cooked potatoes then would not turn back on again

I do not have any type of manual so I can't check where the fuses are that trip when it overheats, to enable me to change the fuse. Can anyone help please.

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6ya6ya
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Posted on Jan 02, 2017

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MicrowaveSvc
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SOURCE: Microwave Fuse keeps blowing

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 you or someone you know decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

There should also be a "mini-manual" hidden inside the unit behind the control panel, which is very helpful when troubleshooting.

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

Posted on Mar 30, 2008

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MicrowaveSvc
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SOURCE: Panasonic nn-p295 blows buss fuse when turned on for cooking

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. But this is likely an inverter model, so it wouldn't have one and would be some other component in the inverter I'd say.

If it goes dead or blows the breaker (or GFI) 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.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:

http://www.microwavedisplay.com/safety.txt

http://www.microwavedisplay.com/disassembly.txt

http://www.microwavedisplay.com/doorsw.txt

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

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

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

The best place to order Sharp parts is 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 Dec 26, 2008

  • 4 Answers

SOURCE: dead microwave

There are replacable fuses inside. Taking the microwave apart requires removal of a lot of screws and the cover that can be rather bulky. make sure it's unplugged and safe before you begin. you can get replacement fuses at radio shack, ect. be sure to buy the same type and amperage. if the blow a second time there may be other issues.

Posted on May 27, 2009

  • 1 Answer

SOURCE: NEFF MICROWAVE OVEN BLOWS 10A INTERNAL FUSE

We had the same problem, got Neff service engineer to come out after taking out insurance. He said the megatron cracks which is a large magnet and causes the fuse board to blow and needs to be replaced. This occurs through lack of ventilation on instalation. Total cost £370 may as well get a new one. Plus our insurance wouldn't pay the cost and cancelled the insurance policy.

Posted on Jun 08, 2009

  • 1 Answer

SOURCE: Toshiba ER-684 microwave time setting?

clock - clear - enter time - clock

Posted on Jun 20, 2009

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While baking a sweet potato, the potato exploded and caught on fire. The microwave no longer works.a fire bro


I haven't heard of such a thing. You must have cooked it until there was no moisture left in the potato. That would also account for the failure of the oven. It would be the same as no load in the oven.
A thermal protect part is your current problem.

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It is time to replace the microwave oven, it is 11 years old and prices in microwaves has dropped considerably. To repair the old! magnetron would need to be replaced, "most expensive part" and other unknown problems would need to be addressed.

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When cooking a potato in the microwave Without puncturing it with a fork... it definitively EXPLODS braking the CAROUSSEL PLATEAU and probably damaging some delicate electronics inside, (you have to pearce the potato with a fork to let steem out when cooking) if you are lucky it could be just a blown fuse inside, have it checked by a proffessional (there is normally no reset for a microwave oven exception maiby for the control panel)

Good luck!

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Not much info to go on here. Are you putting in the number of potatoes vs.the cook time? Most microwave potato functions would not read "5 minutes." It would be read as a request to cook 500 hundred potatoes.

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one of three things shorted could cause this: H.V. diode,capacitor,or the magnetron tube, take screw driver and short terminals on capacitor before touching anything inside the case, then chk resistance on capacitor should show infinite after needle settles, diode should show hi resistance one way and a lower resistance in the other direction(use the RX100 scale not the RX1) on both parts diode should not show very low resistance or it could be leaking,mag is a different story,it can be chk'd but in a different way

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my kenmore microwave model # 66222, doesn't let the steam out, its ventilated so I know thats not the problem, smells like its burning then shuts off and doesn't come back on until its cooled off, this happened when cooking a Baked Potato, also when I cook something for over 5 minutes

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1 Answer

I bought a ge microwave 5/20/08. I have used it several times and it has worked well. Today I was cooking baked potatoes. I usually do them 1 by 1 and then put them in the oven for a crip skin. After...


It should default to the high power level without your having to select that.

But if you think it may have a problem, you could unplug it for a few minutes then plug it back in and try again.

After that, if it's not acting as it should according to the owner's manual, it may need service.

If so, since it's under warranty, I would let GE fix it.GE Customer Service is online here.

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

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Please contact your home insurance to have the problem logged as a failure of the microwave. The insurance company will most likely help you with the smoke damage to the house and will contact the manufacturer to get their money back... there might be an issue with the manufacturing of these appliances.

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Chances are the magnetron overheated and blew the thermostat / thermal cutout that monitors it. The magnetron itself may be bad, too. If Sears Service might consider this still under magnetron warranty, then they may replace the mag with no part costs (or just the thermal cutout part cost), but likely would charge labor. You can contact customer service or repair via http://www.sears.com Otherwise, if you or a friend decide to work on it, we have *critical* safety and disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your base model number (without the suffix) here: http://www3.sears.com or likely cheaper here: http://tinyurl.com/gv383

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