TV OFF -> Screen captures white dots

  • Hi All,

    I have a DIY setup with WS281B, raspberry pi 3 and a USB/HDMI capture card. It worked perfectly for a year until yesterday my wife deplugged something while dusting. I reattached everything and was good again. Everything works fine with the TV on, only when the TV is off or on a black screen some white leds still light up after some 30ish seconds.
    If i go to the web configuration and check out the live video indeed i still see some white dots of which the corresponding leds are lit up (see screenshot attached) This is annoying as I don't want to manually have to start up/shut down my hyperion setup with each tv session.


    Anyone has/had a similar situation? Is my capture card bust?


    Is there any indirect way to bypass? For example a setting to enable LED output only if a minimum amount of live video is detected?


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