Spacemaker xl jvm1339ww002

probably fryed the magnetron, with something like foil or metallic, try unplugging it for 12 hours maybe it will reset if not throw it out

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

Here's a YouTube video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

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

Check fuse. If bad test the door switches. Replace bad one and then the fuse.

Suspect inverter (power) and or the Magnatron---neither are cheap parts.

Hi .. your problem is most likeliy inside the microwave itself. I would replace it. Or you can take it to a shop that does repairs to get a diagnoses and estimate .. but replacement might be the less costly.

not a fuse problem itsounds like its the ic controlon the front panel crt board

have you check the fuses, maybe its open, orthe hv diode.

check fuse inside unit microwave has a fuse around 15 to 25 amps get at local hard ware store u should discharge capacitor before installing fuse not nessary in microwave

if there is no plate to unscrew in front of the bulb , then the only way it can be changed is to open the microwave
WARNING: HIGH VOLTAGE CAPACITOR INSIDE WILL STILL BE HOLDING HIGH VOLTAGE
if you are not familiar with this then don't attempt the repair!
then you will need a technician

electech

lights underneath will not turn off