Range is a a JSP 42 GE and is flashing F7 56 D6. Only the burners working. Range has never been used.

It's possible that a faulty ERC (Electronic Range Control) could damage a new keypad, but it's not very common. The F7 D6 error code indicates a problem with the communication between the keypad and the ERC. Here are a few other things you could try:

1. Check the ribbon cable connection between the keypad and the ERC. Make sure it is securely connected and not damaged in any way.
2. Try resetting the oven by turning off the power to it for a few minutes, then turning it back on. This may help clear any temporary glitches that are causing the error.
3. If the above steps don't work, it's possible that there is a wiring problem or a faulty component in the oven that is causing the error. In this case, it may be best to call a professional appliance repair technician to diagnose and fix the problem.

1. all these problems are given in the link below and the solutions with diagram is given in it
   
2. http://www.applianceaid.com/micro.html
   
3. A common flow chart for microwave repairs
   
4. A breakdown of a newer counter style microwave
   
5. Door switch caution and repair help
   
6. How can I get at the handle screws on my microwave to replace the handle? This has a common GE style microwave picture to help you.
   
7. How to install a common over the range microwave
   
8. Important Disclaimer
   
9. I set something on fire in my microwave and now it is dead...help!
   
10. My GE OTR ( Over The Range ) microwave is running but will not cook
    
11. My Frigidaire microwave is flashing a fault code in the display...what's up?
    
12. My GE microwave is flashing a fault code in the display...whats up?
    
13. My Panasonic microwave is flashing a fault code in the display...what's up?
    
14. My Sharp microwave is flashing a fault code in the display...what's up?
    
15. My Whirlpool microwave is flashing a fault code in the display...what's up?
    
16. My microwave light bulbs burnt out...caution!!
    
17. Ohm testing an capacitor
    
18. Some common Microwave FAQ
    
19. Some common components and how to check them with a ohm meter - like magnetron, high voltage transformer, high voltage capacitor, door switches and high voltage diode.
    
20. Stainless Steel Cleaning
    
21. Sparks from inside the oven area....why?
    
22. Tips on changing a common door switch
    

i t is ugly

Sounds like a stuck keypad. Push all pads at random several times each then try it again. If that does not work the clock will have to be replaced.

Does yours have the (small large burner switch)? If so, try switching it back and forth. It could be defective or your small burner element is bad.

Used toothpick to unclock gas output and worked great. 

Could be bad infinite control switch.

The code is because of bad keypad/the control panel.Have it changed.It probably non-functional and constant beeping sound is followed as you mentioned.Theres a link to explain more about this for reference.The only solution is to replace the control panel.

http://www.askgene.com/2007/06/23/oven-error-codes/ge-oven-error-code-f7-and-how-to-fix-it/

f-7 mean stuck button on key pad or stuck relay on oven control. if the problem started while oven was in use replace oven control. if problem started while oven was not in use replace key pad