Question about GE Spacemaker JVM1640SJ Microwave Oven

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I have #jvm1870sfc02 ge microwave .120v , 60hz , 1.5kw , 950w serial#mg900231s. i am looking for magnetron (om75p(10)). 46nc069177 i don't know what's this number. magnetron has this number. where can i get this magnetron?

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Posted on Jan 02, 2017

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SOURCE: ge spacemaker microwave jvm/1650

Mmmm it's so easy,
First disconect the power, take the cover off, moslitly there would be 5 screws and two tab's on the top.
inside on the right hand side the magnetron it's a sylver box measuring about 4 in x 4 in x 5 in. It will have a plasic cover moslitly that would have to be remove first then on the magnetron there is 4 crews and one connector.
It should fall downard after.
If you have a power supply after the secondary , that may also be your problem.



Posted on Jan 22, 2008

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SOURCE: I need to find an incancent 40w 120v bulb for microwave

This is a common item. Take the bulb to a home depot and they will match it for you or direct you to a local source.

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Posted on Mar 10, 2009

  • 11 Answers

SOURCE: Hi I have a GE JVM1533WD 002 spacemaker microwave

It was the upper thermostat. I switched with a identical one below to get results, Magnetron seems to be burnt out as well.

Posted on Sep 12, 2009

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SOURCE: GE Spacemaker Microwave is not heating, replaced

Check thermal fuse cut out gone..

Posted on Apr 06, 2010

  • 6784 Answers

SOURCE: the GE microwave still runs,

HI. Your symptoms are a strong indication of Magnetron failure. This is the principal heating device, that is used to produce microwaves that , essentially, excite the water molecules in the food, thus, producing the heating effect. When this device fails, generally, the unit will run, but not heat. This device is very fragile, and can injure you if you are not qualified to handle this type of component. There is a High Voltage Capacitor, that is used to help provide the necessary current for optimal Magnetron operation. This capacitor must be discharged correctly. If not, you could risk serious injury, during the repair, if it is accidental touched.

The Magnetron is linked to a cut-off fuse. If the magnetron becomes unstable, this fuse will shut the device down. It is standard procedure to have this fuse test for continuity. If the fuse has blown, this will be the culprit. Replace the fuse. Now, if the fuse continues to show continuity, this will confirm that the Magnetron has failed. I would advise to inspect the Capacitor, and HV diode for visible burn marks, or swollen top(Cap).

Access can be ac hived to these parts by removing the outside cabinet screws. Once the screws are removed, the cover can be removed, as well. Once the cover is removed, the internal components will be exposed for testing, and visual inspections.


Posted on Aug 31, 2010

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I am planning to replace my 240 volt microwave oven with an 120 volt. Can I use a converter?

You might be able to use a 120v to 240v inverter, but may still get problems as the inverter doesn't alter the mains frequency. In the UK and Europe, our 240v / 200v are supplied at a nominal 50Hz. Most 120v systems use 60Hz.

For many devices this doesn't matter, but a microwave oven uses an internal inverter to boost the incoming voltage to the much higher one needed to operate the cavity magnetron: the bit which makes the microwaves. Although it actually runs on dc power, the ac to dc conversion does not produce a smooth dc output,. Since the magnetron relies on an oscillation process to produce microwaves, the wrong oscillation can result in weak or no microwave power, or it can cause the element to overheat and fail.

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It looks like the magnetron failed on your microwave.
This something that you may be able to do it yourself, just need to keep some good safety measures when it comes to the high voltage capacitor.
This may be the magnetron for your appliance:

Good Luck.

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1 Answer

GE Profile JE1660GB01 magnetron failure?

It pass the resistance tests and still be bad, and I suspect it is.

I would also suggest that you check the high voltage diode to be sure it's not shorted.

If the filament voltage and high voltage are both present at the magnetron terminals, and not loaded down, but there is no heat, then it's the magnetron.

As a pro with over 20 years of expereince, I have always measured the high votlage, but I will never recommend it to a non-professional. Without the right equipment and procedure, you and your equipment can be "fried". No kidding.

Here are some good links to safety & troubleshooting:

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

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