Question about GE Microwave Ovens

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My GE spacemaker model JVM1630BB doesn't heat up the food anymore. The interior light works and the turntable.

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  • GE Master
  • 6,771 Answers

The problem is generally caused by a defective magnetron, "heats food" the other two possibilities are the high voltage capacitor and diode. Professional repairs with parts and labor can be very costly "approach the price of a new one"

Posted on Mar 31, 2011

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  • GE Master
  • 3,051 Answers

Hello there and than you for choosing fixya
whenever a microwave stops heating up food there are only 2 things that can make this happen
1 is the mengatron is faulty and 2 is the power inverter that is bad butthis is kind of unlikly so i will stick with the mengatron here is a idea of how it works and how to test it ok
My GE spacemaker model JVM1630BB - tbirdfan1_9.gif





The microwave oven is a very dangerous appliance to work on. For your personal safety, we respectfully ask that you read, fully understand and be prepared to follow carefully the list of very i
The following resistance tests will conclusively reveal a magnetron that is shorted or one that has an open filament winding.

Test 1

1. Unplug the oven (make sure the oven is completely disconnected from any power source)
2. DISCHARGE ALL HIGH VOLTAGE CAPACITORS. (Procedure)
3. Carefully remove all leads from the magnetron terminals. Proper wiring is important so make notes of the wire locations.
4. Set the ohmmeter to its lowest resistance scale.
5. Measure the resistance from one magnetron terminal to the other in either direction.
6. The magnetron filament resistance should be less than one ohm.

Test 2

1. With the meter set to the highest resistance scale, check from the magnetron terminals to the metal magnetron housing. (Be careful not to touch the meter leads as this will result in a false reading).
2. The meter should read infinity (open circuit) regardless of meter polarity.
3. Even a slight reading would indicate a defective magnetron.

Replacement Considerations

1. Be careful not to strike or touch the antenna dome area
2. Be sure to transfer any add-on parts, such as an air duct or thermal fuse
3. Insure that the wire mesh RF gasket is intact and in place
4. Examine the rim of the opening where the magnetron dome is to be inserted into the waveguide. Smooth out any irregularities, such as dents, pits, and burns. The rim surface should be bare metal, smooth to the touch. Use light-grade sandpaper - do not use steel wool.
5. If possible, perform and RF leakage check around the magnetron
6. If there is evidence of poor terminal connections (i.e., discolored, burned, pitted connectors), repair or replace the slip-on connectors on the filament leads

Posted on Mar 31, 2011

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MicrowaveSvc
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SOURCE: My GE spacemaker model JVM1630BB doesn't heat up

We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are operating here.

Listen to that and compare it to yours.

If it sounds much quieter than usual, I would suspect the top door switch (called the secondary interlock switch) or its mount. See this file.

If you only need a switch, you can order a universal type here for $5 postpaid.

If it sounds louder than usual, you may have a shorted high voltage diode or a bad magnetron.

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 or burned, it's probably okay)


http://www.gallawa.com/microtech/mag_test.html

If it's within the magnetron portion of the warranty (usually 5-9 years) G.E. will send you a new magnetron to install yourself. Call them at 888-239-6832.

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.

You should be able to check out and replace the door switch by removing the controller without taking the oven down from the wall.

But to access and replace the other parts, you can download GE owner's manuals and installation instructions here if you want.

You can find links to helpful exploded view diagrams and part ordering help here. I recommend that you bookmark that link to your favorites.

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

Posted on Dec 13, 2009

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My GE spacemaker model JVM1630BB doesn't heat up the food anymore. The interior light works and the turntable.


We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are operating here.

Listen to that and compare it to yours.

If it sounds much quieter than usual, I would suspect the top door switch (called the secondary interlock switch) or its mount. See this file.

If you only need a switch, you can order a universal type here for $5 postpaid.

If it sounds louder than usual, you may have a shorted high voltage diode or a bad magnetron.

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 or burned, it's probably okay)


http://www.gallawa.com/microtech/mag_test.html

If it's within the magnetron portion of the warranty (usually 5-9 years) G.E. will send you a new magnetron to install yourself. Call them at 888-239-6832.

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.

You should be able to check out and replace the door switch by removing the controller without taking the oven down from the wall.

But to access and replace the other parts, you can download GE owner's manuals and installation instructions here if you want.

You can find links to helpful exploded view diagrams and part ordering help here. I recommend that you bookmark that link to your favorites.

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

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