We received some reports that the in some Bose ControlSpace EX-1280C devices the front panel Flexible Flat Cable was not inserted correctly.
This results in a not functional display and power LED, but for the rest the EX-1280C is fully functional (fans are spinning and connection with CSD is possible).
If you experiencing this issue, please contact your local Bose contact to replace the EX-1280C.
Sorry for the inconvenience.