Question about GE Microwave Ovens

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Ge micro wave/ model# jvm1440bh01 manu 01 2005. All lights and turntable works,does not get hot. After it runs for a few seconds it changes to a lower and louder pitch. Tried to change power level and message comes up "Power level can not be changed at this time"

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Sorry to say but your microwave is done. The magnetron most likely is done just like a lot of other GE microwaves. I don't recommend buying another one from them. It will be much cheaper to buy a new one than repair the one you have. Please let me know if you have any further questions or anything else

good luck on getting a new one

Posted on May 23, 2008

  • Benjamin Patri
    Benjamin Patri May 27, 2008

    Did you confirm what I said or just buy a new one, if so then please give me some feedback by
    rating my solution. If you need any more help, I would be glad to
    assist you, just ask.

    thanks and Have a Great Day!

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If the cabinet is intact and the door closes properly there is
absolutely no personal danger. Aside from the brain (timer,
temperature controls, etc.) there are four major components in the
cooking mechanism. They are:
1) step-up transformer
2) diode
3) storage capacitor
4) magnetron
The step up transformer supplies about 3000 volts ac which is
rectified to dc by the diode and stored in the capacitor. The
magnetron converts the high voltage dc to radio frequency energy in
the 3000 Mhz range which induces many small currents in the moist, and
conductive, food which causes internal heating by resistance.

Failure modes usually involve #2 or #4.
If the diode fails there is no heat at all and somtimes a loud hum or
buzz.
If the magnetron fails, the heat is reduced, or absent, and again can
produce a loud hum.

Snapping results from the microwave energy exciting some conductive
particles that can be due to residues in the cooking cavity, or
breakdowns within the magnetron itself. If the cooking cavity is clean
and there are no loose metal objects within it, you problem is most
likely to be a failed magnetron.

These can be purchased new for about $50 but there are tons of usable
parts from discarded appliances. A local technician should be able to
replace this part with a used one for less than $50 total. They come
in about 3 or 4 variations (physical mounting screws, etc.) but can
often be altered to fit safely and effectively.

IF the its within warranty get it replaced, I personally recommend a tech to work on it.......



Good luck..................

Posted on May 23, 2008

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