CS screen went black

[Power Hungry]

First, unplug and reconnect the programmer. It's possible it just locked up and needs a kickstart.

Second, do any of the buttons illuminate and can you hear any beeping when you press the buttons? If not, check your fuses for the cigarette lighter. This powers the OBDII port as well.

Finally, if the device appears to be functioning then you might try using a flashlight to "backlight" the display. This will often help to at least return the vehicle back to stock before sending the unit in for repair. Edge has been aware of the issue with the backlight and has made a firmware change to help correct the issue, but sometimes the updates get overlooked. If you are not able to return the vehicle back to stock, it's not a significant issue as the replaced/repaired programmer will (semi) automatically restore the ECM during the first programming session.

Let me know where you end up with the fuse/reboot situation.

Thanks.