GE Spacemaker JVM1640SJ Microwave Oven Logo
Posted on Feb 14, 2009
Answered by a Fixya Expert

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Microwave fails to operate

Intermittently my GE Spacemakerm microwave oven fails to operate, and no control panel functions work. During these times the vent door is cycling open and close. To restore normal operation the power cord must be pulled and left disconnected for a few minutes. The microwave will then operate normal for a period; and then, repeat the problem.
The unit was purchased new at Home Depot and worked fine for about a year. A GE repair man tried to fix it at a cost 0f $125.00, but the problem persists. The filter was replaced which seemed to help, but did not fix the problem.
Is the a simple answer or should this just be a confusion that owners of this model of oven must tolerate? I hope not. Any answers would be very much appreciated

  • William Miller
    William Miller May 11, 2010


    What is your full model number from the tag on the unit?

    What did the repair man do to the oven?

    The repair center should have a guarantee on their work - did you call them about that?

    I would suspect that you have a failed electrolytic capacitor on the control circuit board (smart board).

    We see this kind part failure often, and it causes odd buzzing and odd operation, depending on the model.

    We regularly repair such control units for
    customers nationwide by mail for $39.95 postpaid in about a
    week with a one-year guarantee.



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  • Posted on Feb 15, 2009
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Sounds to me like a controller problem, if you paid $125 to have the oven fixed and it didn't get fixed, myself I would raise hell.

Tell the repair guy to come back out and fix the thing, I understand about the "call out" charge, and I sure wouldn't pay it the second time, after all he didn't fix the problem, sorry Charlie trying doesn't cut it.

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Microwave went totally dead while operating; there is power to the outlet.

If the control panel lights up intermittently, then you either have a loose connection somewhere near the panel, or a failing component on the circuit board itself.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_29ad5d1dd86564b0

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The controler board, or the power supply for the magnetron has probably failed, or a safety switch is not working properly. It is also possible that the controler board is in a protect mode because of a defect.

The magnetron uses very high voltage at very high current. There is a very large capacitor in the power supply for filtering the DC for the magnetron. This area of the microwave oven is very dangerous to work on. The power supply can be lethal if proper procedure is not complied to when working on it.

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Excellent article about microwave ovens:
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Microwave Oven FAQ from GE:
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Jerry G.
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GE Spacemeker Microwave Oven xl1800

The Control Panel is failing. The Control Panel consists of a Keypad, and a Control PC (Printed Citcuit) Board. You can replace it as a complete unit. Not Cheap!!
Good Luck!
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That would almost certainly be a problem on the control circuit board. If the bulbs happen to short / blow out or if they are removed or installed while the microwave is still plugged in, there is often an arc which causes damage to the board. We repair regularly these boards for such problems for $32.50 nationwide.
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