Question about GE JVM2070 Microwave Oven

1 Answer

Unit has power - program to heat - cavity light comes on - very loud hum on right side of unit - pulled troubleshooting instructions dont have clamp ammeter - checked voltage on Power relay on PCB - 120V Checked HVD side of HVC to Ground - infinity Checked Secondary side of HVT - 120 ohms Is this a bad magnetron?

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  • peter_aleksa Nov 09, 2010

    Magnetron is under a 5 year warranty - is it worth getting GE to service for the cost of the parts?

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  • GE Master
  • 12,061 Answers

This appears to be a classic magnetron failure, the magnetron has failed and most likely the high voltage diode as well, BOTH of these items will have to be replaced, also check the PSU out too, there maybe a bad diode there too..
BE CAREFUL Always discharge the BIG Capacitor to earth, with an insulated shorting stick, each and every time you turn it ON...& OFF. MW's are LETHAL...

www.ehow.com/how_6700606_troubleshoot-ge-microwave.html
Above a DIY link.

Posted on Nov 09, 2010

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1 Answer

GE Microwave Model JEM25WY001 dead


It may have blown the line fuse, the TCO (thermal cutout) above the magnetron, or the TCO on top of the oven cavity.
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.
There's a helpful exploded view here, and you can order parts from the Pros here.
Here is a video showing how to remove a typical over the range control panel assembly in under 5 minutes.
Accessing some components (especially the oven cavity thermostat) for testing and possible replacement will require you to remove the oven from the wall and take off the outer cover.

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

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GE microwave JVM1750DP1CC will not turn on..clock is out, etc


Sometimes folks will actually run the microwave empty (which is very dangerous) when they actually mean to just use the timer.


You can download GE owner's manuals and installation instructions here. It may come in handy in the future.


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.

mini_manual_behind_grille_small.jpg


dee77f7.jpg


When this error occurs, the magnetron gets too hot because there's no load, and its protective thermal cutout (MGT TCO) will open, interrupting all power.


Then when it cools to a safe level, the oven will work again.


Sometimes the TCO fails and has to be replaced, and sometimes the magnetron gets damaged from the heat depsite the protection of the TCO.


If the MGT TCO is okay, also check the fuse, and the oven cavity TCO.


Accessing the oven cavity thermostat for testing and possible replacement will require you to remove the oven from the wall and take off the outer cover.

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 find more helpful exploded view diagrams and order parts by entering your full model number (JVM1750DP1CC) here.


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

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KitchenAid KCMS1555RSS stopped heating. Everthing else works, full display works, time counts down, turntable rotates, light comes on, etc. but no heat. makes loud hum. Magnatron? Cost to replace? Unit is...


If it is making a loud noise, check the diode and magnetron for damage.
BEWARE OF LETHAL VOLTAGES!
The fault may be just the diode and a reasonable cost will be involved. If it is the magnetron, depending upon where you purchase one from will command the price.
Hope that helps.

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You have a bad cavity switch. I would guess it is the one behind the vent cover, toward the left side of unit. You would need to remove unit from wall. Remove outer housing to expose cavity switch. You can see it from vent cover, I would test all cavity switches before removing from wall. You should have a diagram of unit folded up behind vent cover towards right side of unit. This tells all workings of unit. Will also tell where all cavity switches are.

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There should be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, & testing.

dee77f7.jpg

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.

A loud buzz, hum, or groan is usually a shorted high voltage rectifier diode, but a sound like gurgling into an empty coffee mug is one symptom of a failed magnetron, and yet the mag can be bad without that sound.

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


http://www.gallawa.com/microtech/diode.html
(if it is NOT shorted or burned looking, it's probably fine)


http://www.gallawa.com/microtech/mag_test.html
(continuity can be good even though mag is bad!)


You can find links to helpful exploded view diagrams and part ordering help here.

I'd recommend that your bookmark this link to your favorites.



Accessing some parts may require you to pull the oven from the wall and remove the cover.

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.


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.

If it's within the magnetron portion of the warranty G.E. 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.


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

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1 Answer

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It's likely a blown fuse or a thermal cutout / thermostat on either the magnetron or the top of the oven cavity.

Accessing some components (especially the oven cavity thermostat) for testing and possible replacement will require you to remove the oven from the wall and take off the outer cover.

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.

0833cec.jpg

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.

You can find links to helpful exploded view diagrams and part ordering help
here.

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

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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.

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

It may be an open fuse, magnetron TCO or oven cavity TCO.

Accessing the oven cavity for testing and possible replacement will require you 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 Maytag owner's manuals and installation instructions here.

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

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If it was the bottom TCO or magnetron TCO, you should be able to access them by just removing the control panel.

But if it's the one on top of the cavity, the oven will have to come out of the wall, then you need to pull of the outer cover..

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.

You should locate and look this over first.

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.

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.

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You can find exploded views and order parts by entering your model number at the Sears parts site.

There may also 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.

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

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There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

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

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

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Whirlpool customer service is here and you can also enter your model number on that page to download your owner's manual, installation instructions, etc..

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

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