Blank cabinets of display- HUB board failure


  • Cabinets blank (could be non consecutive) on a Display
  • How to judge a HUB board failure for J and L series display


  • Product Family: NovaStar Sender Box / receiver cards
  • Product: Nova MCTRL660 sender box, MRV300Q
  • Component:
  • Control System: World Wide Gold, Limited Compliance Gold, NPP Control using transmit common/open protocol.
      • This includes but not limited to DVN-4003, Dragon sticks, J Series, U Series, Q Series​​, JVX, QVN-1000, QVN-1001, and ZPN.


  • If a Hub board fails, the cabinets related to it will be blank. 

Hub board failure.jpg 


  1. Replace the Hub board. (attached to the receiver cards)


Related Resources

How to judge receiver card failure NovaStar controlled display?

Blank cabinets of display-receiver card failure

Daktronics J Series Displays- J10 Replacing a Hub and Receiver Card​

Daktronics L Series Displays- Removal and Installation of an L Series Receiver and Hub Card​

How do I replace a hub card on a DVN-4003?

KB ID: DD3345234

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