Question about GE Spacemaker JVM1640SJ Microwave Oven

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I have a GE Spacemaker and it is about 9 yrs. old. Sometines it heats; other times it doesn't. I change settings and sometimes that works. Is this something that can be repaired or is this a sign I need a new microwave?

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When the microwave is not heating, that means the magnetron is not working. This is what provides the heat to the microwave. I do believe the magnetron has a 10 year warranty.

If you wish to replace it, here is how:

  1. Unplug Microwave at least few hours before
  2. Remove Microwave from above oven range by somebody holding Microwave from ground unscrew the screws from cabinet
  3. Remove top cover of Microwave
  4. Make sure to keep screws correctly in a place you remember what goes where
  5. Make sure capacitor is discharged, GE manual inside Microwave says capacitor will discharge within 30 seconds once it is off. As a precaution check the voltage in capacitor to make sure there is no electricity
  6. Remove other panels around magnetron part
  7. You need to remove lot of connecting wires, should be careful to note down what goes where
  8. If possible take digital photos to refer back when you put everything back together
  9. You may need to remove transformer to easily remove and replace Magnetron. If you can't remove Magnetron easily then remove bottom panel of the Microwave and remove transformer
  10. Now it should be easy to remove magnetron
  11. Replace new magnetron and screw it. We had to put one outside part from old magnetron to new one because new one was missing that. Check to make sure both old and new one are exactly the same
  12. Make sure put all wires properly back
  13. Now put transformer back and screw it
  14. Put capacitor panel in place and screw it
  15. This might be a good time to test the Microwave to make sure it works fine now
  16. Now cover the top panels and start to screw everything
  17. Once everything assembled put the Microwave back above range put screws from top
I have a GE Spacemaker and it is about 9 yrs. old. - b7c8eaf.jpg
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Posted on Sep 02, 2010

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1 Answer

It works normal but doesn't heat.its 11 yrs. Old. Do I repair or replace it.


It would be much easier, and cost efficient to replace the Microwave, especially if no heat is being generated.

If the light, or turntable went out or something, maybe then a repair would be more reasonable.



I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

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  • Make sure that the microwave is plugged into a grounded outlet. It must be a 3-prong outlet.
  • Make sure the clock is set.
  • Check to see if a programming sequence was entered. Sometimes improper programming or a program sequence such as delay start can cause the touch panel to be non-responsive. Unplug microwave or turn off house circuit breaker for 30 seconds. Plug back in, or reset circuit breaker, and try reprogramming unit.
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yes anything can be fixed but a do it yourselfer i reccomend against this cause thats a radiated element in the micro
recommend go out and purchase a replacement go with G.E. they have the 7 year warranty great little micro. too change out is easy

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The main power supply may have a fault. Also, the HV supply may be weak at the same time.


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