Hi! I am getting an F3 error on my GE Microwave Model#JVM1640WJ03. I have tried turning off and back on the microwave but it just starts the error code again within seconds, none of the keys seems to do anything. I have read that this is a result of a shorted key pad which seems consistent with my problem, however i am confused, do i need a key pad, or the control panel behind the key pad? If you can point me in the right direction for what to order I am sure my hubby can figure out how to replace it! 
Thank You for your time and help!
I am bumping this in the hopes that someone will soon tell me which part to order
The “F3” error code means “Shorted key panel (touch pad)”. The correction is to replace the key panel aka a membrane switch or a touch pad. The control panel in that case is just a plastic frame.
- The key panel AP3205165
Here are the breakdown diagrams and Replacement parts for GE JVM1640WJ03 | AppliancePartsPros.com
Gene.
Thank You soo very much Its out of stock so hopefully it will be in soon but thank you soo much for replying i very much appreciate it!! You are awesome gene!
I had the same F3 message after I replaced the old panel - it had faded - with a new one that we got for from GE. After removing as described in the other posts and putting it back in I got the F3 message. In this case I knew that it had to be related to the panel itself and not to any of the other reasons posted. I eventually found that one of the buttons on the panel had a piece of plastic attached to it from the old panel and was in the pushed position. Once I removed the stuck piece it worked. Bottom line, it could be a simple problem with one of the buttons and not anything requiring a new part.