Frequently Asked Questions

 

Troubleshooting steps:

1) Make sure that the flat flex cable is laying completely flat under the leg of your iMac. ( it might have got twisted in the installation process .)

2) Plug the cable directly to the back of your iMac. ( avoid any USB Hubs )

3) Disconnect any external devices (hard drives) from your iMac/Thunderbolt Display.

4) Try different ports on the back of  your iMac

5) Reboot your computer.

 

Disclosure: Can’t guarantee that it works with older Cinema Displays and iMacs before 2009