Display too bright at night, not dimming automatically; Failed light sensor

Potential Symptoms

  • Display is not dimming down automatically but light sensor is correctly addressed and is being detected but Venus 1500 shows brightness of 100%.
  • Display does not dim down on its own over time if tape is put over the sensor or when ambient light levels decrease.


  • Product Family: Message Displays
  • Product: Galaxy, GalaxyPro, AF-3200, AF-3220, AF-3400, AF-3700, AF-3500, AF-3550, GP3, GP4
  • Component: Photocell (Light sensor)
  • Control System: Venus 1500 v3 or v4


  • Failed light sensor.


  • Replace light sensor.

KB ID: DD3245856

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