After doing much research online, I found out that the Touchpad on the JennAir downdraft gas range JGS9900BDS is very prone to "breaking." All my neighbors who has this model has reported that the touchpad stopped responding after a few years. Replacing was fairly simple.
1. Turn off the electricity to the range at the breaker
2. Pull the range out by an inch or two
3. On each side of the control panel, remove the screws.
4. Open the oven door and remove the 4 hex screws under the control panel
5. Remove the gas knobs and unscrew the 4 screws in it
6. Pull the control panel out gently
7. Using a sharpie, label 1-7 on the circuit board as well as the wires (I used masking tape on the wires)
8. Gently remove each wire connection
9. Unscrew the circuit board and replace it on the new control panel
10. Reverse the process to attach all the cables and screws (remember to remove the masking tape if you used it).
Hope this helps.