Have a ge spacemaker microwave and the buttons just stopped working last week. The screen only says "press clock". It is not a year old. Bought at home depot and lost original paper work.

probably a magnatron failure
take it to an appliance repair shop for a proper diagnosis and get a quote as repairs can be more expensive than new unit

Could be the magnetron or the transformer. No it is not worth repai

From the description a major part has failed, the magnetron is suspect because it suddenly shut down in cycle, if the unit is less than 7 years old it probably has a inverter board and tends to fail, also there is the possibility the keypad control board has stopped working. The microwave in my opinion is worth getting checked out and repaired, but it will be expensive.

If you press clock and nothing happens your keypad has shorted out and needs to be replaced. Try to unplug the unit one more time and try to turn the unit on again. If you have the same problem replace the control panel.

Hi,

Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic Microwave Oven Troubleshooting Tips

heatman101

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If the model number you have listed is correct, you turn the Child Lock feature on/off by pressing and holding the "Clear/Off" button for three seconds. The instructions are on page 28 of the Owner/Operator Manual.

If your model number is different from the one you have this question posted under, please post back with your correct information so that I may be able to provide you with better assistance.

I hope this helps you.

There's a simple fix for this. Unplug the unit. Take off the top grill with 2 screws. Remove the 1 screw that holds the touch pad unit. Lift up on touchpad unit and lift out. Put a piece of aluminum foil inside a large zip lock bag and tape it to the back of the touchpad unit and reassemble. GE put the magnetron to close to the control board causing stray microwaves to interfere with the board. The foil shields it.

You can get the manual here.

http://www.retrevo.com/s/GE-JVM1640SJ-Microwaves-review-manual/id/1080ci954/t/1-2/

But usually you just press the clock button to set

Good Luck and Please Rate Fixya!

It is a door switch problem of some sort.  I have two Sharp R-1611 units that do the same thing.  The light and fan come on, but not the heat, thank goodness.

I am going to replace it since the plastic for the case and door is cracked in numerous places.  I have spent several hours researching microwaves online have not a single clue what to replace the Sharp with.  Seems like every vendor has very good units and very bad units.  I guess you just pay your money and take your chances.

I had same problem last week. My GE JVM1650 Spacemaker stopped after a few seconds of heating. Owned 16 months, manufactured Jan 2005. It was the magnetron, which was replaced yesterday. The magnetron has a 10-year warranty, but I had to pay $161.00 for labor by a GE technician. The call-out fee was waived at my request. I don't know what that amount would have been, but I can't believe the $161.00 for what was about 1/2 hour labor once diagnosed. Good Luck!