Display consistently rebooting; Memory card corruption

Potential Symptoms

  • Display keeps showing a boot up sequence.
  • Will reboot whether there are messages on the display or not.
  • Controller keeps rebooting, but boots up normal when SD card is removed.


  • Product Family: Message Displays
  • Product: Galaxy, AF-3500, AF-3550, AF-3700
  • Component: M3 controller
  • Control System:


  • Segment on memory card is corrupt causing the reboot.


  • Re-format memory card.
    • Call Daktronics technical assistance for help with this process.

Work Around

  • Replace controller.

KB ID: DD2227322

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