Question about GE Spacemaker JVM1640SJ Microwave Oven

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Microwave power failure, clock losing time

Occasionally my microwave will just stop working in the middle of operating, it also seems to be losing time when compared with my oven clock, also the LCD display that shows time remaining dims and blinks when operating. Do you have any idea what could be wrong.

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  • ccculton Feb 03, 2009

    No, the reset clock message is not displayed. I guess it is the magnetron problem then? Thanks.

  • nemo45 May 11, 2010

    If your microwave stops, and displays the message, reset clock its a known problem. Ge looked a our microwave and told us it was the magnetron. Labor is 185 to replace, but the part is covered. The problem finally got so bad that the mw died.

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6 Suggested Answers

MicrowaveSvc
  • 8820 Answers

SOURCE: Setting clock on Westinghouse WST3501 microwave oven

Normally you would press Clock, enter the desired numbers, then hit Clock or Start. Try it with door open and with door closed.

Otherwise, contact Westinghouse Small Kitchen Appliances at 800-947-3745 or see http://www.saltoninc.com/contact/contact.html

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

Posted on Dec 13, 2007

  • 579 Answers

SOURCE: Buzzing noise, wont work???

The magnatron is shorting, overloading the high voltage transformer. From the picture this looks like an older unit and is probably not worth a magnatron replacement.

Posted on Dec 31, 2007

MicrowaveSvc
  • 8820 Answers

SOURCE: stop after 5 seconds

In most cases, this is a problem with the inverter or a bad magnetron.

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

I would recommend that you contact your nearest Panasonic-authorized servicer. You can find one here.

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

Posted on May 27, 2008

MicrowaveSvc
  • 8820 Answers

SOURCE: GE microwave oven - just stopped stopped working

A microwave can be dead for many reasons.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

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: http://tinyurl.com/yzjozk

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

NOTE: 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.

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

Posted on Jun 08, 2008

MicrowaveSvc
  • 8820 Answers

SOURCE: JVM1740SM1SS

Your membrane keypad has probably failed.

If you might want to replace it yourself, I have uploaded a handy guide with pictures showing you what's typically involved.

It's at http://www.microwavedisplay.com/keypad_replacement.pdf

We have critical safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

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

Essentially you unplug the oven from the wall outlet, and remove the control panel assembly as per the instructions at the site linked above.

(Remove the grille from across the top, remove the top screw in the control panel frame, then lift up & out).

There should also be a very helpful "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille.

Then unplug the keypad from the circuit board, heat up the keypad from the front with a hair dryer, then peel the old keypad off.

You have to make sure all the old adhesive is off or the new keypad will not stick.

I use paint thinner or mineral spirits, then follow up with isopropyl alcohol to be sure the panel face is squeaky clean and dry.

Then peel the backing paper from the new keypad and carefully press the new keypad in place.

You need to be precise - you cannot apply it, peel it off, then reapply it.

If you would like to have us do this for you, we do that for $39.95 plus part costs.

Please feel free to contact me directly if you need more help.

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

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Posted on Jun 23, 2008

MicrowaveSvc
  • 8820 Answers

SOURCE: display not workign

Sadly, the display tube is not available separately, so the only way to fix this is to replace the board, at a whopping $181.48!

One trick that helps is to remove the control panel assembly, take the circuit board out of the frame and very carefully wipe the front of the glass and the rear surface of the control panel frame's display window.

Use a soft cloth with alcohol-based (non-ammonia) window cleaner.

That will brighten it up quite a bit.

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

Be sure to unplug the oven before you do any disassembly.

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

Posted on Jul 28, 2008

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Disconnect the microwave from the power source while the power is still out. If the microwave is a built-in, turn off the circuit breaker. Otherwise, unplug the microwave from the wall outlet. This prevents a power surge from damaging the magnetron tube when the power is restored.Turn on the circuit breaker or plug the microwave into the outlet only when you are sure that the power is permanently restored. If there are still storms in the area, the power may be disrupted again. Reset the clock on the microwave. Microwaves vary slightly on how to set the clock, but usually there is a clock button you press. Use the number pad to input the correct time and press the clock button again to set it. Test the microwave by heating some water to ensure that it is still in good operating condition.

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Usually all you have to do is press stop / cancel, then Clock then CLOCK again. After the time is set your microwave should work normally again.

If this does NOT correct your problem I need a complete model number in any future responses.
Thanks for choosing FixYa.

Kelly

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Light is on when door opens but time(clock)and operating keys do not function.


Sorry to read about your problem.
It seems your have a general failure in the power control or switch failure on the unit. if you unit has power, and things lite. it is more likely you have a control/switch problem,

I tried to help you. Please help me and Rate/Vote on my response, thanks and good luck

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If the clock is not set, nothing will work as the controls require the time to be working. Press Clear/stop twice and press clock, set time and press clock again.
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Clock Losing Its Memory


Our oven clock does the same thing every time the power blips, but we live way out in the boonies and expect occasional problems. Do your lights blink too? Check with your neighbors to see if they have power problems. If this is a chronic situation, contact your power company to see if they can repair the situation.

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You can download GE 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 you don't have your manual, you can download it free here. Check the lower right area to enter your model. number.

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