Interactive Flat Panels
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    • #35984
      Amity VaughnAmity Vaughn

      One of the Promethean boards at my school started displaying horizontal lines on the screen today. Occasionally it clears to only one line. But it mostly flickers back and forth between one and many lines. There are no HDMI cables attached to it at this time. Only the power cord. lines in screen

    • #35986
      Karen PrometheanKaren Promethean

      Hello Amity,

      Thank you for your post.

      Due to the nature of this issue we are going to contact you directly via email with specific troubleshooting and questions.

      Kind Regards,

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