How to judge a HUB board failure for J and L series display?


  • Cabinets blank (could be non consecutive) on a J or L Series Display


  • NovaStar
  • Nova MCTRL660 sender box
  • MRV300Q
  • Gold Family Displays
    • J Series Display
    • L Series Display


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

Hub board failure.jpg 


  1. Replace the Hub board.



How to judge receiver card failure for J and L series display?

KB ID: DD3345234

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