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Micro wave shuts down in 3 seconds

My GE microwave model JVM1650SH02 shuts down in 3 seconds and then tells me to select time and date. This has been going on for several weeks now. Even if I select a NEW time and date, its still shuts down. Pls. help.

JDiaz

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I experienced the same problem with my GE Microwave (JVM1650SH02) shutting down in 3 seconds and then having to reset the time and date. The solution was to replace the Magnetron. I called GE (888-239-6832) for a free warranty part.
Once the part arrived, I removed the microwave from the wall and cabinet.
Once down, I removed the top and side panel off the microwave. I then unsrewed the metal side wall to get access to the magnetron. Lots of srews, so make sure you keep everything in order. Once the side plate was removed, you need to unsrew the 4 nuts on the outside of the magnetron, and also remove the unit next to the magnetron so you can get the magnetron out. replace magnetron and reassemble everything.

Good luck -

Posted on Jan 28, 2010

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

Details are
in their bulletin here.

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

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 Samsung 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.

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 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.

micro wave shuts down in 3 seconds - dee77f7.jpg

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.

Posted on May 24, 2009

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See my detailed information page here:
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William E. Miller, AS-EET
pupista@gmail.com
http://www.microwavecontrol.com
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"Recycling by repairing since 1982"

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The problem you describe on your JVM1650SH02 is a failing "noisy" magnetron which is emitting electrical interference that disrupts your microprocessor.

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

You will find a technical sheet hidden behind the grille or behind the controls. It's handy for locating parts and troubleshooting.

You can find an exploded view and parts list by entering your full model number from the tag here, and you can also order parts there.

On your model, you may need to remove the oven from the wall. The installation instructions here will be helpful.

Pro tip: In many GE models, dropping the floor plate that holds the high voltage transformer is necessary to get the magnetron in and out.

For more free DIY and other help & advice, feel free to contact me via my site.

Please include FULL model number*, FCC ID number*, + detailed symptom information. ( * on the tag in cooking cavity or around door frame or control frame or on back)

William E. Miller, AS-EET
http://www.microwavecontrol.com
Microwave Oven Control Panel Repair Nationwide
"Recycling by repairing since 1982"

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Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

You can find an authorized Panasonic servicer here.

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