Xcontorller No Power /Not connecting to Computer

I had to use the emergency stop (red button) during a carve. I’ve reset it by twisting the knob until it clicks. However, the x-controller doesn’t seem to have power fan will power on, no green light on the front of the x-controller.

I’ve opened the x-controller and double checked the connections, reset the emergency stop switch, but thats as far as my troubleshooting know how gets me.

Any advice?