TNMC not lighting; Insufficient re-drive signal voltage output from preceding driver

Potential Symptoms

  • TNMC not working or lighting.
  • TNMC blank or blanking.
  • Incoming signal voltage to TNMC is lower than the required 10-14vDC.
  • Issue moves with driver.


  • Product Family: Sports Product
  • Product: Scoreboard with Electronic Captions or Team Name Message Centers (TNMCs)
  • Component: Driver signal voltage re-drive
  • Control System:


  •  Driver that the TNMC is connected to is not outputting (or re-driving) the correct signal voltage.
    • Signal voltage to the TNMC driver is insufficient.


  •  Replace scoreboard driver that is not outputting the proper voltage.

Related article:  TNMC not lighting; Insufficient output voltage from power supply for preceding driver: DD4127905.

KB ID: DD2235748

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