Red light on ActiveBoard speaker button

AEVStechAEVStech Posts: 2
On one of our ActiveBoard speakers the control button remains red despite pushing it or cutting power to it. The sound input is through USB but now the computer no longer recognizes the USB as a sound output option. Are there any suggestions on how to correct this. The Active board itself works properly.


  • Hi AEVStech ,

    Thank you for your post.

    Can you confirm if the interaction on the board works fine?
    Also please provide us the model of the board, NOT the serial number.

    In addition, this issue could indicate a fault with the power supply unit - are you able to test with another one of the same model?

    Thank you

    Promethean Technical Support

  • AEVStechAEVStech Posts: 2
    Just confirmed the board interaction is working properly. The model number is PRM-AB378-03. When I tried another power adapter the button continued to be red.
  • Adam K PrometheanAdam K Promethean Posts: 2,249 admin
    Hi AEVStech,

    Thanks for your reply.

    I would recommend contacting Promethean Technical Support directly and providing your ActivBoard serial number so we can check the remaining warranty for this ActivBoard.

    Promethean Technical Support

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