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NO POWER NO LIGHTS, FUSE IS GOOD - GE Microwave Ovens

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A microwave can be dead for many reasons.

It may be the fuse, which is usually located on the floor of the oven behind the control panel or between the door switches.

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

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 Aug 03, 2008

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Jerald,
It may just be a blown fuse. At 15 years old it might be a good idea to consider a new one but replacing the fuse is not real expensive and fairly easy to do. Unplug your microwave and turn it around and remove the screws holding cover on and then remove the cover. Look for where the power cord goes into the back of the unit and follow the black wire from the cord to where it ends. It should stop an either a circuit board or a fuse holder. Make sure that you replace the fuse with the same amperage fuse as what you take out. You will find the amp rating stamped on one of the silver collars on each end of the fuse. Good luck!

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You probably have a blown fuse inside your microwave.

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My GE spacemaker xl1400 model JVM1451BA 001 DOES NOT TURN ON, serial # HT9897895 , it wont make a noise or nothing, not lights, someone told me its a fuse, but I dont know what the fuse is called to go to...


First try plugging it in a different power outlet to eliminate a possible defective AC outlet, than if it still does not work, your friend could be correct it could be a fuse, if you have electrical skills you can verify your self. first unplug the power cable, than unscrew the cover to get to the electronic board, locate all the ceramic fuses and with a good multimeter set to (Ohms) check the continuity of all fuses if it reads 0 ohms it's good if it reads nothing than it is bad, replace that fuse with the same amperage and type than put the cover of the oven back, plug the power cable and give it a test if the fuse burns again than the problem is much worse, it could be a defective safety switch on the door frame or a defective circuit board, take it to a good repair shop...

REMEMBER TO ALWAYS UNPLUG THE POWER CABLE BEFORE OPENING THE UNIT!!!

Hope this helps!

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665.68601890 Acts as though it is not receiving power but breaker is not thrown. Is there an internal reset. Nothing responds - no lights, fan or microwave. Panel is black and non responsive


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