Question about GE JVM1440 Microwave Oven

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GE JVM 1440 BD 003 transformer HV lead connects to compacitor/diode tab side

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

MicrowaveSvc
  • 9047 Answers

SOURCE: microwave runs but does not heat

With the symptoms you have, I would most strongly suspect a shorted high voltage rectifier diode or a bad magnetron, or a loose and possibly corroded connection on the magnetron's terminal.

The diode is a fairly cheap fix, and the mag will cost more.

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.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.gallawa.com/microtech/diode.html (if it's not shorted, it's probably okay)
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Dec 17, 2008

cactus bob
  • 267 Answers

SOURCE: HV diode producing resistance of 10 ohms.

you cannot check a microwave diode with just a mutli meter . you have to make a test jig take a 9 volt battery and a meter with dc volt scale set up the meter just like you would test a 9v battery .with me so far ? now remove one lead from the battery and insert the diode between the battery and the test lead .......take a reading . now reverse the diode take a reading ........ i just tested a diode before writeing this and this is what i got my battey volts where 9.2 v whith the diode inserted i got 7volts . reversing it i got .02 volts dc . a diode is a one way valve and mine is good because it passed curent only one way ...yours should be about the same ....... if you understand this please leave me 4 stars ! i even went out in the shop and tested a diode for you just to make sure my answer was correct

Posted on Mar 07, 2009

  • 1 Answer

SOURCE: How do I change a fuse in a GE JVM 1440 microwave oven?

Remove 2 screws from front vent cover and removed vent cover
Remove one screw from top of display
Gentley push display panel up about 1/4 inch and tilt the top toward the front.
Disconnect 3 thin gauge molex connectors
Disconnect 1 heavey gauge connector
Remove screw from grounding wire at botton of display curcuit board
Remove display panel completely

Remove grill from above display area
To the left is a 2 x2 inch square board
Coil, capacitor and fuse block
Remove fuse
Check fuse rating
Match fuse rating and replace

Posted on Mar 12, 2009

  • 1 Answer

SOURCE: GE profile 1800 2yrs old. Model #JVM 1870cf06. No heat,

{ MAGNETRON FAILURE }
I cut the magnetron right down the center. I can see why so many GE magnetron fail. They have a poor Filament design. The sparial spring that completes the filmanet circuit on the cathode will become brittle over time and will surely fail. I am a layman when it comes to this design. I see no GE
magnetron with this filament design lasting 10 years.

Posted on Jun 06, 2009

heatman101
  • 43501 Answers

SOURCE: GE spacemaker microwave still not heating

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

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Posted on Sep 30, 2010

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1 Answer

JVM 1440 GE microwave stopped heating. all other functions work great. where do I start


GE microwaves are notorious for the magnetron failing, this is what generates the microwaves. Usually the unit will make a louder than normal deep hum when running if this is the case, but not always. If you have the schematic, you can measure for 120 volts leaving the control board to the transformer, you can simply measure the line in on the transformer for this. You also want to visually note that all other functions like the countdown timer, inter light, turntable, and fan are all running when you start a cooking cycle. The monitor, and interlock switches mounted on the latch assy need to be checked for continuity too. If replacing the magnetron we always recommend replacing the high volt diode connected to the capacitor and chassis ground. Pleazer Appliance...

Jan 14, 2015 | GE Microwave Ovens

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.

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

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Jan 04, 2011 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

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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3 Thumbs - Helpful

Jan 01, 2011 | GE JVM1440 Microwave Oven

1 Answer

I have a replacement magenetron and diode for a GE Profile undercabinet microwave. Can you share the step by step instructions for replacing it? Model number JVM 3670


Disconnect the power source.
Remove the cabinet to reveal the wiring.
Locate the large transformer. Next to the transformer is the magnetron and diode assembly. MAKE SURE THE CAPACITOR IS DISCHARGED AS LETHAL VOLTAGES ARE HERE!
Disconnect the diode and remember where the connections came from, (a phone camera is useful for this job). Remove the magnetron.
Replace the magnetron and fit the diode pack.
Replace the cabinet and test by placing 1/2 litre of water in the machine, having first measured the temperature of the water.
Microwave for 1 minute.
The water should have increased in temperature by at least 10degrees Celcius. If it has, it is to specification and you have repaired your microwave oven.

Dec 28, 2010 | GE Profile Spacemaker JVM1871 Microwave...

1 Answer

Microwave runs but does not heat anything


Look at the diode, magnatron or the HV Transformer
Probaby the HV Transformer

Jun 20, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

GE profile 1800 2yrs old. Model #JVM 1870cf06. No heat,


{ MAGNETRON FAILURE }
I cut the magnetron right down the center. I can see why so many GE magnetron fail. They have a poor Filament design. The sparial spring that completes the filmanet circuit on the cathode will become brittle over time and will surely fail. I am a layman when it comes to this design. I see no GE
magnetron with this filament design lasting 10 years.

May 27, 2009 | GE JVM1440 Microwave Oven

1 Answer

Ge jvm 1653 won't heat


You've got a problem in the microwave circuit, which could be one or more of the following components -

1) HV diode
2) HV Capacitor
3) HV transformer
4) Magnetron

I am leaning to the diode, but it would take further investigation to determine for sure. Diodes are cheap, as if the capacitor, and replacing those first would not necessarily be in vain if it turns out to be the transformer or magnetron. And I would be most inclined to say it's the magnetron before I would think transformer.

Reply back what you find or if you have more questions.

Feb 04, 2009 | GE Microwave Ovens

1 Answer

Burning odor, no heat


A burning smell along with a different sound (growl) USUALLY indicates a breakdown in the High Voltage Side. This is not a direct short (short circuit) or the line fuse would have blown shutting everything down. The High Voltage Side is made up of-- The Secondary ,or High Voltage Side of The High Voltage Transformer, A High Voltage Diode, A High Voltage Capacitor, and The Magnetron. If The High Voltage Transformer is the problem it will smell like a florescent light ballast burning, and will smell each time you turn on the MW. A HV Diode burns and opens, thus no more smell. A HV Capacitor usually does not burn nor does the Magnetron. There is no Cheap-Fix unless you can see that the HV Diode is burned into and you can get to it to replace. CAUTION: Always unplug from power before attempting to repair. NOTE: If you replace a Diode make sure it goes back in the same direction it came out. Yes there is a front and back.

Jan 26, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

2 Answers

Burned magnetron antenna


The average multimeter does not output enough voltage to forward bias a high voltage diode, so it will seem to read open. This is normal.

It still may need a new high-voltage diode and stirrer, and the cavity may be affected.

GE had a campaign (but not a recall, mind you!) covering several models.

Details are in their bulletin at http://207.234.249.73/mwd/ge_mw_mag_kit_bulletin.pdf

The parts kit (that GE used to pay for) is part # WB27X10489 and is shown in the photo below.

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

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

Chances are GE won't cover any of this, but just in case you want to contact them, GE Customer Service is at http://www.geappliances.com/service_and_support/contact/

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

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Jan 14, 2008 | GE XL1800 1100 Watts Microwave Oven

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