Shuts off after a few seconds and says to reset the clock

SOURCE: We own a GE Microwave jvm1653sh01

The first thing I would check would be the magnetron TCO (thermal cut-out). This is a little safety devise that protects the magnetron in the event of overheating. These can act up even without overheating. I believe the nuetral side of this TCO runs through the board, and therefore the flickering and shutdown. When the TCO cools, it resets. If it were the door switch, you would blow the fuse and wouldn't be able to set the time without changing the fuse. There are other cavity thermostats that could be the culprit but my quess is on the magnetron TCO. When working with microwaves always unplug the unit and discharge the capacitor. This is high voltage..Good Luck

SOURCE: Nothing happens when you press "Start"

PLEASE CHECK IF DOOR IS CLOSED PROPERLY THOSE HOOKS ON THE DOOR ACTIVATE SWITCHES ON THE INSIDE OF MWAVE OPEN COVER AND CHECK IF HOOKS ARE MAKING CONTACT WITH SWITCHES .COULD ALSO BE TOUCHPAD FAULT YOU WILNEED A TECH

SOURCE: stops cooking

I had the same problem, but seem to have fixed it last week. Thank goodness, because with 2 little kids, I really need the microwave.
My January '05 model JVM1653 would intermittently have a flickering display then reset itself after about 3 seconds into a full power heating cycle (it was still ok on reduced power). I don't know what the problem was for sure, but protecting the front panel circuit board from radiation seemed to do the trick.
I put a sheet of aluminum foil in a ziplok bag (I used the gallon size, but the 1 qt size would probably do just fine), taped a "twistum" tie with the plastic stripped off the ends of the wire to one corner of the aluminum sheet, and then sealed up the bag and put a piece of tape on the corner of the bag where the wire was hanging out. With the front panel tilted out, I attached the other bare end of the tie to the green ground wire screw. I then "stuffed the ziploc into the open behind the panel while trying to keep the circuit board as shielded as possible. I carefully closed up the front panel, making sure i didn't get the ziplok punctured by the circuit board stuff.
So far so good!!!

SOURCE: Power cuts out after about 5 seconds

I unplugged the power for about 8 hours. I work 3rd shift so I unplugged it while I was getting my nights sleep during the day. Tried setting the clock and heat a cup of water. It ran 2 seconds and then the display went to all characters and finally back to please press the clock button, just as it did before. Other functions like the timer will work fine and the clock stays online until the microwave is set to heat. Any other possible solutions?

Barry

SOURCE: oven shuts down after a few seconds into cycle time for cooking

The magnatron (heating element) is located in the cavity behind the control. If it's leaking microwaves onto the electronics, this will occur. This means the Mag should be replaced and a radiation test run on unit.