Question about GE Spacemaker JVM1640SJ Microwave Oven

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Ge magnetron failed i believe

The last time it failed ge tech just wrote out for exchange. Is it because it's too hard to fix? It's happened again and want to know if the same thing would happen? Is that typical. I know that they have a 10 year warranty on the magentron.

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Yes It is especially hard if someone had put any metal part into the microwave which turns the waves back to the tube, and causes early failer of the tube. That tube is more expensive that any other part of the machine. 

Posted on Dec 30, 2008

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I have a GE XL1800 that won't heat.


HI. Your symptoms are a strong indication 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.

WARNING: IF YOU ARE NOT A QUALIFIED SERVICE TECH, THIS WILL NOT BE A NOVICE DO IT YOURSELF JOB. MICROWAVES ARE VERY DANGEROUS, AND CAN CAUSE SERIOUS INJURY. I RECOMMEND TO CALL FOR SERVICE, IF YOU ARE UNCOMFORTABLE WITH HANDLING THE CAPACITOR, OR MAGNETRON.

Mar 01, 2010 | GE XL1800 1100 Watts Microwave Oven

1 Answer

I just ran my GE microwave for 7 minutes while empty. Heard a pop sound and now it won't run. Is is ruined?


The worst thing you can do for any microwave is run it empty as you have found out the hard way. What has happened is RF from the magnetron has reflected back into your magnetron. Some models even have an RF filter window that has the same color as the insode of your unit but a fiber appearance. Running the unit empty causes the RF to burn through this RF filter and stright back into the magnetron itself. Some units have a thermal protection thermostat on the magnetron that turn off the power to the magnetron when it gets too hot. Since you heard a pop you could have a bad load capacitor that has failed or the chassis diode itself has failed. You can take the unit in for service but if they tell you that the magnetron needs replaced I would think hard about having it repaired as the cost can be as much as 50% of a new unit. the Cap and Diode replacements are much more resonable repairs. Good Luck.

Jan 10, 2010 | GE Spacemaker JVM1540 Microwave Oven

1 Answer

I believe the magnetron just went out


Make a few phone calls and get the actual costs-then decide. You cant normally fix microwave ovens yourself though. Generally when the magnetron goes its time to buy a new micro unless its under warranty.

Oct 03, 2009 | GE JVM1410 Microwave Oven

1 Answer

GE Eterna Microwave stops after a few seconds, must reset clock..


The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

If that doesn't work, leave it unplugged for about 5 minutes.

Otherwise, this is almost always due to a defective or loose magnetron causing electrical interference and disruption in the control circuit board.


Details covering some previous models are in their bulletin here. Even if your model is not on the list, the same problem can occur.

If your magnetron was recently replaced, it may have loose mounting nuts or bolts or maybe the wire mesh RF gasket was not installed or got pinched.

NOISY MAGNETRON TEST (c) 2009 William E. Miller prototech@usa.net

(PLEASE do not be fooled into thinking that the procedure outlined at this link is a "fix". It should only be regarded as another test method to prove that you have a noisy magnetron which must be replaced.)

One way to test it is to do the following:

1. Unplug the microwave or turn off its breaker.
2. Open the door, then detach the control panel as shown in the video at http://www.microwavedisplay.com and swing it down, but without disconnecting the wires. If you have any trouble getting the grille off once the screws are removed, slide the hood vent grille to the left about 1/4", then then pull it forward. On some models there are L-shaped clips that fit into a slot to hold bottom of the vent.
3. Plug the microwave back in.
4. Make sure neither you nor anyone else reaches in behind the control panel. There will exposed high-voltage connections.
5. Put a few cups worth of water in a microwave-safe container and place it inside the microwave.

6. Shut the door.
7. Run the microwave for about 1 minute or so on full power. (Time Cook > 1 > 0 > 0 > Start, e.g.)
8. If it does not fail, try it several more times.
9. When the water boils, change the water and try again.


NOTE:
If your model does not have a door handle, you will need to unplug the oven and reattach the control panel to be able to open the door.


If it still does not fail, I would recommend that you put it all back together and keep using it until it fails more consistently, then repeat this test.

If it keeps failing while the board is in the down position, you either have a very leaky magnetron or possibly another problem.

So you can then get a Ziploc bag and insert a flat piece of aluminum foil into the Ziploc and close it.

Then (with the power off) tape it over the circuit board as best you can, covering it as much as you can, making sure it does not get snagged or punctured.

Then try the oven again. Do not leave this test shield in place as a "fix". It is not safe.

While a microwave should never be left running unattended under any circumstances (as your owner's manual will tell you) it's even more important when one is exhibiting a failure or any odd behavior. So play it safe and stay with it while it's running!

If you or someone you know want to replace the magnetron yourself, you will need to remove the oven from the wall.

If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.

You can download GE owner's manuals and installation instructions here.

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.

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

If it's within the magnetron portion of the warranty (usually 5-9 years) but out of the original full warranty (usually 1 year), then your manufacturer will cover the part cost, but not the cost to visit you or the labor charge to do the work.

Sometimes they will send you the magnetron to do it yourself. Call them at 888-239-6832.

Be persistent. You may have to speak with a supervisor.


If it is not within the magnetron warranty, you can 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.

Jul 23, 2009 | GE JVM1650 1000 Watts 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

New GE Magnetron. Where does this new HV diode go?


Fixed it. There was a back capacitor fuse (I believe that's what it's called) on the old magnetron. I removed it and put it on the new magnetron. The HV diode is on the big silver capacitor and very easy to replace. I just didn't see it. It was definitely the magnetron and I hope that this new one comes with a warranty for 5 more years.

Nov 29, 2008 | GE JVM1631 Microwave Oven

1 Answer

JVM1650SH05 Intermittent won't heat


On many of these GE (by Samsung) and similar models, there were "underperforming" magnetrons that would fail, often causing other damage.

In many cases, these ovens also need to have the high voltage rectifier diode and/or stirrer replaced.

In rare cases, the cavity would be overheated and the whole oven would need to be replaced.

In some cases, a service center will have a stock of magnetrons, and they may be of the "underperforming" type instead of the newest version.

So a repairman may (knowingly or not) be replacing a failed magnetron with one that is destined to fail soon.

It may be an innocent mistake, or it may be a way of not having to deal with a bunch of bad stock parts that may cost him time or money.

And if you just go put them in ovens and bill GE for the part and your customer for the labor, you're making money.

There should be a 5-9 year warranty on the magnetron.

Details of this whole magnetron saga are in their bulletin here. Even if your model is not on the list, the same problem can occur, requiring a kit. The parts kit is similar to this one.

I would check that, then call contact GE to find a different local servicer if possible.

Whether you use that servicer or a different one, I would mention or show the bulletin to them even if your model is not affected. It may have similar trouble that needs to be addressed thoroughly.

You need a thorough, competent checkout.

GE Customer Service is here.

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

Jul 17, 2008 | GE JVM1650 1000 Watts Microwave Oven

1 Answer

In 2004 we purchased a GE Convection Microwave oven (Model JEB1095WB002) along with a stove and cooktop. Well the GE Repairman was here today to replace the Magnatron for the FOURTH time (he said third...


I wonder if the service center is still using the older version magnetrons that were subject to a campaign (not a recall, mind you!) by GE?

This was a well-known issue with the GE/Samsung magnetrons.

Otherwise, unless the cooling fan is failing, your line voltage at the outlet is too high, or you are running the microwave empty or too dry, there's not a lot else that causes magnetron failure.

So for GE to replace the whole microwave is generally not viable or economical.

Your best bet is probably to contact customer service via this page.

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

Jun 25, 2008 | Microwave Ovens

1 Answer

Takes much longer now to heat things


I think you have two separate problems.

Taking a long time to heat is almost always a failing magnetron.

The cover on the side is the waveguide cover. If your waveguide cover is burned or broken, it will need to be replaced.

It protects the waveguide and magnetron from grewase and food particles, which can cause arcing and damage.

Hopefully your oven is just under the one-year mark and GE will fix it free under warranty.

Otherwise, they will replace the magnetron at no part cost, but labor will be your responsibility.

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.

May 10, 2008 | GE Advantium 120 Convection/Microwave Oven

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:

http://www.gallawa.com/microtech/cap_test.html
http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

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

Dec 17, 2007 | GE JE1660 Microwave Oven

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