Question about GE Microwave Ovens
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Posted on Jan 02, 2017
the service manual for this model and have uploaded it to our
site here to help you.
You will need the free Acrobat Reader to view or print it in case you don't have it.
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.
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 a few 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.
If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.
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.
You can usually find helpful exploded view diagrams and order parts by entering your full model number here.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Dec 25, 2008
SOURCE: Light bulb in oven went out
Remove the top grill by removing two screws in the top. Pull the top of the grill out towards you as the bottom has pegs on it. About 6 inches from the left is metal cover that you just squeeze with your finger tips to remove. This exposes the bulb.
Posted on Mar 29, 2009
You may consider using epoxy to "glue" the handle back into place. The epoxy will be stronger than the handle itself. If you do this get the one minute epoxy
Posted on Apr 27, 2009
there is a fuse located underneath the outer cover, its called a ceramic fuse and is of cartridge type about 1" long by 1/8" diameter and has a white body and 2 silver ends and you can take it to a hardware store they have them but make sure to get correct amperage rating 15 or 20 amp
Posted on Sep 26, 2009
Tips for a great answer:
Dead appliance, power on wall outlet.
SAFETY IS PARAMOUNT!
this only if you are competent.
your appliance has absolutely no functions at all, remove it from the
mains supply, remove the case and see where the mains lead goes in to
the appliance and follow the cable until you find the main fuse.
ONLY USE THE SAME TYPE AND RATING OF FUSE TO REPLACE IT.
The usual cause of this fuse failure is the door switches are contaminated or sticking. Check the door switches before putting power back on to the appliance.
Hope this helps.
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