Question about GE JVM1790 Convection / Microwave Oven

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JVM1190WY My convection oven/microwave stopped working. I have power in the outlet but no power on the oven.

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  • William Miller
    William Miller May 11, 2010

    Is it dead, meaning no
    display, no light when you open the door and no beeps when you press a
    pad on the keypad?

    A microwave can be dead
    for many reasons.

    It
    may be the fuse, which is usually located behind the grille, on
    the
    floor of the oven behind the control panel, between the door switches,
    or on the filter board near where the cord comes into the unit.

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

    So don't let that fool you.
    The
    TCOs you need to be concerned usually with have all black or white
    wires only.

    If the cavity thermostat
    needs to be checked or replaced you'll need to pull the oven from the
    wall.
    If
    so, the installation instructions are very handy, and it's best to have
    two people since the microwave can be heavy and awkward. You can download GE
    owner's manuals and installation instructions here.
    If it went dead almost
    immediately after pressing the Start pad, that's usually a shorted
    high-voltage capacitor.

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

    If
    it goes dead or blows the breaker (or GFI) 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.

    There
    should 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 & testing.
    At
    our Web site, we have a video
    available showing how to remove a typical
    over the range control panel assembly in under 5 minutes.
    You can usually find
    helpful exploded view diagrams and order parts by entering your full
    model number from the tag on the oven here.
    Let us know how it goes.

×

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

  • 579 Answers

SOURCE: Microwave convection oven repair needed

Check the internal fuse. Unplug it, unscrew and take off the cover, the fuse should be easily found in the back by the power cord. I tlooks like a regular fuse but is white instead of clear glass because microwave fuses are special. You'll have to measure it with a meter as a result and be sure to replace it with the same kind. (try finding them at radio shack) Hopefully there isn't something more serious also.

Posted on Jan 01, 2008

  • 140 Answers

SOURCE: GE JVM1190WY 003 Microwave Convection sparks

The problem that you are having is that the magnetron inside the microwave is shorting out to ground and it will find the shortest path to reach whatever has metal in it. Replacing the magnetron will solve your problem altogether and you need not do anything else different and continue using your metal racks.

Posted on Feb 11, 2009

MicrowaveSvc
  • 9047 Answers

SOURCE: My GE Profile Microwave/Convection Oven stopped working.

Chances are that the thermostat / thermal cutout / T.C.O. (whichever it uses) has opened.

This can happen when the magnetron overheats, either due to it's failing, or if the internal cooling fan is not working.

It may also that be the 15- or 20A ceramic line fuse or the oven cavity thermostat / thermal cutout / T.C.O. (whichever it uses) has opened.

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 & testing.

dee77f7.jpg

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

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

You should be able to get the fuse from a home center or local appliance parts store.

Accessing some components for testing and possible replacement will require you to remove the oven from the wall.

If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.

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.

Posted on Jun 08, 2009

  • 4088 Answers

SOURCE: HOW TO REPLACE BLOWN FUSE

Look for a reset button on the back--push to reset. If trips again, unit has probable short.

Posted on Jul 12, 2009

  • 197 Answers

SOURCE: microwave not working

Magnetron may have died or internal fuse may have blown.Its could be all sorts of things.
May be time to buy a new one!

DO NOT TAKE OFF THE COVER YOUR SELVES, AS THEY MAY BE ELETRIC CHARGE STILL PRESANT EVEN WITH THE PLUG DISSCONNECTED

Posted on Sep 18, 2009

Testimonial: "Quite helpful; all I have to do now is translate the two solutions into french to ask them to check. Buying electrical in France is very expensive."

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