GE spacemaker - JVM 1653 SH unit shuts down after power up. Start back again when cool? Do I scrap it or is it repairable?

This is magnetron-related.

See this FixYa solution (solution #2) even though your model number is different.

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

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101
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Clean out the cabinet above the micro wave and you will find 2 or 3 bolts that secure the unit (MW) to the bottom of the cabinet. They will normally be towards the front of the cabinet.
I always put a towel or cardboard over the surface of the range for protection and a place to set the MW once it is ready to come down.

Have someone either hold the MW up by putting pressure upwards on the front of the MW or take the screws out. (don't forget to unplug the MW)
Gently let the front of the MW fall forward about 6" to 8" and lift the back of the MW upwards and it will release from a mount that is attached to the wall.
You may feel a little resistance as it might be duct taped to the exhaust going up or out the back.
Be aware that these older micro waves can be a little heavy and it is recommended that 2 people are used to do this.

my spacemaker xl jvm 1650 microwave shuts down after just a few minutes of operation and after a few minutes needs to have a clock/time/day etc reset. is this reparable by a homeowner?

You have a shorting membrane keypad.

If and when an oven is coming on or doing anything by itself, this is very dangerous and can result in a fire.

So until it is repaired, please leave it unplugged or leave the door open when it's not in use, and please do not leave it running unattended.

Feel free to contact me directly (and please include your full model number from the tag in or on the unit) for a free estimate and free tips & do-it-yourself advice.

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

William E. Miller
[email protected]
http://www.microwavedisplay.com

You've got a problem in the microwave circuit, which could be one or more of the following components -

1) HV diode
2) HV Capacitor
3) HV transformer
4) Magnetron

I am leaning to the diode, but it would take further investigation to determine for sure. Diodes are cheap, as if the capacitor, and replacing those first would not necessarily be in vain if it turns out to be the transformer or magnetron. And I would be most inclined to say it's the magnetron before I would think transformer.

Reply back what you find or if you have more questions.

I have model GE Microwave serial # JVM2070SK02. I start to cook something and it shuts off 5~10 seconds. Keyboard is still lit up, but no clock, fan, light and you cannot operate anything on the key pad. Unplug the unit and it resets. Sometimes it cooks, sometimes it doesn't? It is getting more frequent with the shutting down problem?

could be door switches could be pcb could be mag, cap or hv transformer.. Its really just a guessing game but one of the above is defo the cause best to get a tech in to have a look or get it replaced whichevers best for yourself

If the fan comes on when you put the unit into a cook cycle and all sounds normal otherwise, you most likely have a bad magnetron tube. (Google "GE magnetron failure" and watch how many complaints and articles pop up). The tube overheats and trips the thermal relay causing the unit to shut off until it cools back down and comes on.
Very, very common problem on these models although GE will not admit it.