Blank display; Failed contactor(s)

Potential Symptoms

  • Display face does not power on unless the button on the back of the contactor is manually pushed.
  • Contactor will not engage when receiving 120 VAC on the Violet and White wires.
  • Breakers in display are not getting power to them.


  • Product Family: Billboards
  • Product: DB-4200, DB-5000, DB-6400, DXB-0100, BLD-0100
  • Component: Display Contactors
  • Control System:


  • Failed contactor(s).


  • Replace contactor.

For Temporary Operation

  • Contact Daktronics for assistance.

KB ID: DD2531815

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