Question about GE JVM1790 1000 Watts Convection / Microwave Oven

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MW fan (not vent fan) keeps running full time

I have a problem with GE JVM1790.
The MV unit fan now runs all the time and never turns off unless you open the door.

(I am not referring to the vent fans).

The unit will heat fine, but the fan that cools the MV power unit runs non-stop unless I unlpug the unit.

Is there a RESET sequence for the onboard PC or is this some other "zip-zap" circuit board glitch ??

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  • sbno7 Feb 12, 2009

    I too have this same issue. This van will not turn off unless the door is left ajar.

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5 Suggested Answers

SOURCE: New microwave; loud fan when heating items

Update: I took it back. After speaking to GE, they said that's just how it is, there is no way to silence or quiet it. I took it back and bought an LG. I love it!

Posted on Jul 01, 2007

  • 5 Answers

SOURCE: GE Advantium SCA1000.

I fixed this yesterday, using the solution posted here: http://forum.appliancepartspros.com/microwave-repair/4882-advantium-turntable-light-always-main-relay.html

Unplug the unit.

Replace the interior light using these instructions: http://www.instructables.com/id/GE-Advantium-Microwave-Halogen-Lightbulb-Replaceme/ The inside of my unit looks a bit different from the pictures, but the procedure is basically the same.

Additional info not in the procedure link above:

Remove the one screw at the top of the front control panel.
Slide the control panel up to disengage it, and pull out slowly (has wires on back)
There are four black rectangular things running top-to-bottom on the PCB board on the back. One of them is labeled RY1.
Tap on RY1 with a screwdriver a few times (very high tech). I actually tapped on all of them for good measure.
Reassemble, see if everything works now.

It took me about 30 minutes for the bulb and the control panel 'adjustment'. Everything is working now.

Posted on Nov 18, 2008

  • 123 Answers

SOURCE: GE JVM1440WH01 Will not heat, everything else

It could be a number of things, Burnt connections between the magnetron, Capacitor, Diode and transformer, Heater connections loose or burnt, Transformer, Capacitor Diode or Magnetron US. You need to strip it and find out if you are getting about 2000volts to the Mag, Are you getting approx 5volts across the heater terminals?? NOTE that the 2000 Volts can remain in the cap indefinitely and the voltage is LETHAL. IT WILL KILL YOU if you don`t take precautions. Ian

Posted on Aug 06, 2009

  • 78 Answers

SOURCE: I have a GE jvm1790 microwave that when its pluged

The megatron tube is not working. The microwave should turn off when the door is opened for safety. If it is still under warranty, return it. If not, you may consider replacing the unit. I know its expensive, but its just taking up cabinet space tonight.

Posted on Nov 09, 2009

wiringlunati
  • 576 Answers

SOURCE: Microwave GE Spacemaker JVM1650SH05 - The light

The bulb may have blown. It is often under an access panel on the side or back that is held on with a screw or two.

Posted on Jan 26, 2010

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1 Answer

Microwave stays on after the cooking time. Motor keeps running and product continues to cook unless you open the door or unplug


sounds like your timer switch is faulty what make and model is it
if its a cheap make and model bin it and buy a new one
this is potentially dangerous and could go on fire (DO NOT USE FAULTY ELECTRICAL EQUIPMENT )

Jul 30, 2013 | GE JVM1790 Convection / Microwave Oven

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My GE Microwave JVM1850 will not heat unless I put the vent fan on.


That's really odd. I don't believe I've heard of that one before.

I would suspect the problem is on your control board, which in most can be repaired simply and inexpensively.

A YouTube video showing how to remove a typical over the range control panel assembly in under 5 minutes, is here.

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

Nov 30, 2012 | GE JVM1850 1000 Watts Microwave Oven

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My GE JE1640GB MW kept running after I was done using it. I held down the Off button to try and reset it, which locked the unit (unit reads "Lock" and diplays an L when running). I need to...


Thank you so much for the info. The WD 40 worked perfectly on the door and my microwave in not turning on every time the door is opened. This info saved me time and $. Thanks

Dec 01, 2010 | GE JE1640 Microwave Oven

1 Answer

Changing interior light on GE jvm1790


1. Unplug Oven
2. Unscrew 2 screws on top front of oven
3. Pull of front vent (might need a little force the
first time but not to much or you will crack
plastic)
4. Unscrew screw facing you near the front that is
attached to metal plate on bottom of opening
behind the vent.
5. Pull out metal plate (box) carefully not to
damage any wires.
6.Bulb is in this metal box, pull out old one and
press the new one's prongs into holes (be
careful and gentle the bulb breaks easily,
don't try to pull it back out to see if it's all
the way in or you will most likely pull a
prong out of the bulb)
just firmly press bulb
into place.
6. Screw metal plate back in place.
7. Plug in oven and test bulb.
8. Unplug oven again and put vent back on with
the 2 screws.
9. Plug in, set clock and your done.

The first time I opened it up was to look for the bulb. The vent needed a little pulling to come off. The second time (to put in new bulb) it came off easier and whole thing took about 5 minutes.
Hope this helps.
Just in case: I am not a professional nor claim to be. This is based on my own experience. Yours may differ. Unless you feel totally comfortable you should contact a licensed electrician or an authorized service agent.

Oct 18, 2010 | GE JVM1790 Convection / Microwave Oven

1 Answer

I have a GE jvm1790 microwave that when its pluged in, the magnatron fan runs with the interior light is on constantly. I can't start either the microwave or convection. Everything stops when the door is...


The megatron tube is not working. The microwave should turn off when the door is opened for safety. If it is still under warranty, return it. If not, you may consider replacing the unit. I know its expensive, but its just taking up cabinet space tonight.

Nov 06, 2009 | GE JVM1790SK Convection/Microwave Oven

1 Answer

I have a Ge jvm1790sk and while the microwave is running there is no internal light how do I replace it?


Unplug unit before entering.

The light bulb is behind the air vent at the center top of the microwave. Remove two screws at the very top front of the microwave and pull the vent cover forward at the top. Sliding left is sometimes necessary to release the bottom tabs of the vent cover. The light fixture will be behind this cover.

Good Luck. Reverse the above process to reassemble.

Sep 06, 2009 | GE JVM1790 1000 Watts Convection /...

1 Answer

Active vent keeps opening and closing though fan is off.


When the unit begins the never ending opening and closing cycle, turn the vent fan on for a few seconds and then turn the fan off. This seems to stop the active vent from opening and closing. If this is GE quality, this is the last thing that I am going to purchase. GE refrigerators are garbage and now I am having problems with a new microwave oven.

Apr 27, 2009 | General Electric PVM1870SMSS Microwave...

2 Answers

Microwave interior light


Very easy to replace...at least on my JVM1790. Remove the top vent....the long plastic thing that runs along the top of the MW. Two screws on top of the micro. Behind the charcola filter (if you installed one) is an access area to the bulb. remove one screw and the entire assy comes out. Simply R & R the bulb.

Oct 19, 2008 | GE JVM1790 1000 Watts Convection /...

1 Answer

Blower motor on above stove microwave not running


The dual fan in the back is the vent / exhaust / hood fa. It will run when you turn it on, or if the stove top gets too hot.

The other fan is the magnetron cooling fan, and it will only run when you are cooking. If it is not running, your magnetron can be destroyed.

You can download GE owner's manuals and installation instructions here. That may help you a lot.

Please reply back with more details if this is not yet a FixYa...

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

Aug 17, 2008 | Microwave Ovens

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