No Signal HDMI keeps dropping out

Hi all, I am having an issue with a few AP4-75-02 flat panels. They work for a while using a laptop on HDMI 1 and running the Android box on HDMI 2. We are having an issue with the flat panel losing the HDMI 1 signal. Sometimes its after running Microsoft Powerpoint slide shows. We either get the "No Signal" or the home screen of the android box appears on HDMI 1. If its the No Signal we have to shut everything down and start it all up again. If it is the home screen you have to switch between HDMI 2 (which the android is connected to) then back to HDMI 1. I have update all the boards and still getting this issue. I have also tried them on different HDMI ports and different laptops.

Any ideas??


Best Answer

  • michaelomichaelo Posts: 14
    Accepted Answer
    Updating to the latest version of firmware seems to sort this issue


  • Hello michaelo, 

    We will be sending an email from our support team to the email of your user profile so we can continue to troubleshoot the issue with the panel. 

    Thank you, 
    Promethean Technical Support

  • andystumpfandystumpf Posts: 2
    We are having the same issue.
  • Adam K PrometheanAdam K Promethean Posts: 2,325 admin
    Hi andystumpf,

    I've seen that you have posted elsewhere on the Support Community.

    We will help assist on your other thread.
    Many thanks
    Promethean Technical Support

Sign In or Register to comment.