Daktronics

Blank display. Uninterruptible power supply failure.

Potential Symptoms

  • UPS loses power and all devices plugged in turn off right away.
  • UPS does not turn on automatically after site power is restored.
  • UPS standby time at 0 minutes.
  • UPS may power on but then shut off a few minutes later.
  • UPS beeping.
  • Unable to communicate to enclosure equipment.
  • Unable to view webcam.
  • Display is blank.
  • No power on output of UPS even though it is receiving proper incoming power.
  • May have battery failure light on or may have no lights lit at all.

Environment

  • Product: DB-1000, DB-2000, DB-3000, DB-4000, DB-4100
  • Component: Uninterruptible Power supply (UPS), Battery Backup
  • Control System:

Cause

  • UPS has failed.
    • Anything that causes the UPS to not function properly is a failure, including the UPS not turning back on automatically after a power outage.

Resolution

  • Replace the UPS.

For Temporary Operation

  • Bypass UPS until a new one can be sent to site.

KB ID: DD2097474

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