eCCB is blank; Controller is locked up

Potential Symptoms

  • Unable to play test patterns.
  • No heartbeat present.
  • Controller status lights indicate there are no issues, but unable to output content.


  • Product Family: Message Displays
  • Product: eCCB (Electronic Changeable Copy Board)
  • Component: Havana Controller
  • Control System:


  • Controller is locked up.


  • Power cycle the controller at the breaker or at the controller itself.

KB ID: DD4304762

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