Question about Microwave Ovens

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I have a microwave with a blown fuse. ive been to maplin but they dont stock that particular fuse. an electrical repair shop assistant told me the megatron whatever that was could be the cause and its not worth replacing it. is this true? i recently bought a new microwave, but if i can get my old one to work i will return it. any help with the fuse would be great, thanks

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You could try CPC components (www.cpc.farnell.com) they stock microwave fuses. The shop assistant is correct, if it is the Magnatron then this is a costly repair & not economical. However depending on which fuse has blown, there could be a problem with one of the door switches or other causes. BE WARNED... Microwave ovens can be very dangerous appliances to work on if you are not fully electrically experienced & if you do obtain a fuse, be careful when replacing it.

Posted on Jul 22, 2009

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Hi I have a daewoo microwave kor/6n9rr 800watt the upper fuse has blown ,enquired with spares suppliers ,only fuse showing on their parts was one with wire attached each end with terminals which I...


Hello Mary

You shouldn't be working on, or inside a microwave oven. They are not a consumer repair job due to the debilitating effects of microwave energy, the high voltages inside the capacitor, and the highly poisonous core to the magnetron.

Fuses blow for a reason, you have to find the reason before replacing the fuse. Unless you are an electrical engineer, take it to an authorised repair centre, or just buy a new one.

Apr 17, 2017 | Daewoo KOR6N9RR Microwave Oven

1 Answer

Microwave activate but will not heat food all light and buttons work but will not heat up


Sorry to read about your problem, I hope this helps you out.

You can many different issue's
  1. Blown fuse in HV transformer primary circuit or HV fuse (if used).
  2. Bad connections (particularly to magnetron filament).
  3. Open thermal protector or thermal fuse.
  4. Open HV capacitor, HV diode, HV transformer, or magnetron filament.
  5. Shorted HV diode, HV capacitor (will blow a fuse), or magnetron.
  6. Damaged protective VDR from filament to chassis (not commonly used).
  7. Defective HV relay (not commonly used).
Microwaves must be serviced by technicians due to the inherent dangers involved in repairing these appliances. Internal capacitors can retain a lethal electrical charge even though the unit is completely unplugged. A microwave radiation leakage test must be performed on the unit following any internal component repair.

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Jan 04, 2011 | GE Spacemaker JVM1640SJ Microwave Oven

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GE JVM1440 will not heat.


Sorry to read about your problem, I hope this helps you out.

No heat but otherwise normal operation.
Possible causes:
  1. Blown fuse in HV transformer primary circuit or HV fuse (if used).
  2. Bad connections (particularly to magnetron filament).
  3. Open thermal protector or thermal fuse.
  4. Open HV capacitor, HV diode, HV transformer, or magnetron filament.
  5. Shorted HV diode, HV capacitor (will blow a fuse), or magnetron.
  6. Damaged protective VDR from filament to chassis (not commonly used).
  7. Defective HV relay (not commonly used)
Microwaves must be serviced by technicians due to the inherent dangers involved in repairing these appliances. Internal capacitors can retain a lethal electrical charge even though the unit is completely unplugged. A microwave radiation leakage test must be performed on the unit following any internal component repair.

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question. take the time to rate us.Thanks and good luck

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Jan 01, 2011 | GE JVM1440 Microwave Oven

1 Answer

No power


Hello :

I also think that its the fuse . You need to replace it . To locate the fuse, remove the outer cabinet of the unit, which is usually held in place with a few screws. Once the outer cabinet is removed, follow the power cord into the unit. It will take you to the fuse holder, where the fuse sits. The fuse holder is located two or three inches into the unit, and may be attached to a power board .

CAUTION: Your microwave oven is capable of giving you a serious electrical shock, even when it is unplugged. I strongly suggest you seek the assistance of an appliance repair technician when conducting any microwave oven repair.

PLEASE DON'T FORGET TO RATE !

Apr 13, 2010 | GE JVM1653 Microwave Oven

1 Answer

We closed the microwave door. There was a flash and the microwave is completely dead. Is there a fuse that would have caused this? What would have blown to cause this problem? Is it fixable and how. I'm a...


Hello :

I would guess that it's the fuse . To locate the fuse, remove the outer cabinet of the unit, which is usually held in place with a few screws. Once the outer cabinet is removed, follow the power cord into the unit. It will take you to the fuse holder, where the fuse sits. The fuse holder is located two or three inches into the unit, and may be attached to a power board .


WARNING : A microwave oven is capable of giving you a serious electrical shock, even when it is unplugged. I strongly recommend you seek the assistance of an appliance repair technician when conducting any microwave oven repair .

good luck .

please rate !

Mar 30, 2010 | GE JVM1630 Microwave Oven

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AFTER 12 MONTHS ON NO PROBLEMS IT WONT WORK. IT DOESNT GIVE ME DISPLAY LIGHTS OR ANY.


most likely the internal fuse
be soooooooooo carefull in replacing this , the capacitor inside the machine can store a huge charge

  1. Turn off all electricity to the microwave and unplug from the wall socket. Move the unit to a well-lit location to better see the appliance.
  2. Step 2 Usea schematic for the particular model of microwave being worked on tolocate the area containing the fuse to be replaced. Fuses can belocated behind the microwave door or behind a panel either on theinterior wall or an exterior panel. Often the fuse will be behind apanel located under the louver vents on top of the microwave.
  3. Step 3 Removethe panel according to the manufacturer's instructions. Use a screwdriver to remove screws and set aside for replacement.
  4. Step 4 Locatethe blown fuse and check with a voltmeter. This step ensures that theproblem with the microwave is indeed a blown fuse and not anotherissue. Check for current between fuse connectors.
  5. Step 5 Take the blown fuse to a local hardware or store such as Lowe's or Home Depot. Staff can assist in finding the exact replacement fuse for the model being repaired.
  6. Step 6 Placethe new fuse into the panel in exactly the same fashion as the blownfuse came out. Replace any panel using the removed screws and returnthe unit back to its proper location.
  7. Step 7 Plugthe microwave into the wall socket and turn on all electricity. Testthe unit by ensuring the clock and all other features function.

Oct 21, 2009 | Emerson Microwave Ovens

1 Answer

Microwave making loud noise behind control pad and won't heat


Sounds like the magnatron (the bit that creates microwaves) could be goosed. Remove outer cover ( Isolate from the electric supply then remove screws at bottom on the sides).

Find big lump that says on magnatron with model nos etc on, any good electrical supply shop ( Maplins etc) should stock new one.

It is easy to change. It took me about half an hour having never done one before.

Buyer beware the price of the parts could be in excess of a new microwave.

Shop around

Sep 15, 2009 | Panasonic NN-T993SF Microwave Oven

2 Answers

No power, fuse is blown no continuity.


You can get your fuse at Radio Shack or any good electrical supply store.good luckDFD

May 06, 2009 | Microwave Ovens

1 Answer

Microwave went dead


Hi

If your microwave oven doesn't seem to work at all, check these: Fuses Usually, when your microwave oven doesn't work it all, the internal fuse (thermal fuse) is blown. This fuse protects both you and the oven. When it blows, you need to have a qualified appliance repair technician replace it.

Door switch If the fuse isn't the problem, check the door hooks and the door-release button. When these are broken, the door switch doesn't activate, so the oven can't work.


Please do rate the solution as FixYa and revert for further assistance.

Thanks
Rylee

Apr 26, 2009 | Whirlpool MH7140XF Microwave Oven

1 Answer

How do you know the fuse in the microwave is no good?


first you need to see if the energy is being produced, go to an electronic store, here in UK Maplins ( US radio shack) and purchase some standard 5mm red led's cut off the leads close to the led.palce them in the oven and put on cook for 5 seconds, if they light then you have energy. if not then start looking for a large fuse inside the casing, check this and then check the control fuses on the boards.
lots of shops sell cheap fuse testers. best of luck

Feb 18, 2009 | Whirlpool GH7155XHS Microwave Oven

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