Checked the small white fuse in top right corner-not blown
GE microwaves are notorious for the magnetron failing, this is what generates the microwaves. Usually the unit will make a louder than normal deep hum when running if this is the case, but not always. If you have the schematic, you can measure for 120 volts leaving the control board to the transformer, you can simply measure the line in on the transformer for this. You also want to visually note that all other functions like the countdown timer, inter light, turntable, and fan are all running when you start a cooking cycle. The monitor, and interlock switches mounted on the latch assy need to be checked for continuity too. If replacing the magnetron we always recommend replacing the high volt diode connected to the capacitor and chassis ground. Pleazer Appliance...
SOURCE: microwave runs but does not heat
With the symptoms you
have, I would most strongly suspect a shorted high voltage rectifier
diode or a bad magnetron, or a loose and possibly corroded connection on the magnetron's terminal.
The diode is a fairly
cheap fix, and the mag will cost more.
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 be a "mini-manual" (tech sheet) hidden inside the unit
behind the
control panel or hidden on the left side behind the grille, which is
very helpful when troubleshooting, testing, and locating components.
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.
Here are some links you
or someone you know can use for test help, but read their safety
warnings first:
http://www.gallawa.com/microtech/diode.html (if it's not shorted, it's
probably okay)
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html
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.
SOURCE: How do I change a fuse in a GE JVM 1440 microwave oven?
Remove 2 screws from front vent cover and removed vent cover
Remove one screw from top of display
Gentley push display panel up about 1/4 inch and tilt the top toward the front.
Disconnect 3 thin gauge molex connectors
Disconnect 1 heavey gauge connector
Remove screw from grounding wire at botton of display curcuit board
Remove display panel completely
Remove grill from above display area
To the left is a 2 x2 inch square board
Coil, capacitor and fuse block
Remove fuse
Check fuse rating
Match fuse rating and replace
SOURCE: GE Spacemaker microwave XL1400
If everything else is running but the food is not heating, the microwave generator is shot and needs to be replaced... Unfortunately, you need to be certified in handling the units so the average consumer cannot buy one (at least not as far as I could find when I had to replace mine) .
Will cost $150 to $200 so unless you have a pretty fancy microwave it will probably cost less to just replace the whole darn thing - So much for going green!
SOURCE: Microwave part of my GE Sensor Convection Microwave doesn't work
Hi,
Here is a tip that will help you to figure out what is wrong with your Microwave Oven....
Microwave Oven Basic Troubleshooting Tips
http://www.fixya.com/support/r5508031-microwave_oven_basic_troubleshooting
heatman101
SOURCE: microwave blows fuse in microwave mode grill function ok
It is most likely the capacitor has shorted or the rectifier has shorted. Check with ohmeter, but make sure it is discharged first by shorting the capacitor with a wire.
Hi,
Here is a tip that will help you to figure out what is wrong with your Microwave Oven....
Basic
heatman101
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