Atlona Help Center

KB01333 - Fix for blue-screen, preventing video from passing


Subject: Fix for blue-screen, preventing video from passing


When the AT-HD-SC-500 is on a Firmware Version below 1.3.31, there are certain scenarios that can cause the following symptoms to occur:

When the unit is powered on, only the Power (PW) LED is illuminated.


The HDMI video output cycles between no video, and sometimes results in these blue screens with glitches/artifacts:



To restore the unit, follow these steps:

  1. Disconnect and reconnect the HDMI Inputs 1 & 2.
  2. Ensure that there are active video sources at HDMI Inputs 1 & 2.
  3. Press the Input button until either HDMI Input 1 or 2 LED is illuminated, and the expected picture is visible on the display.


Now the unit is restored. To prevent this from occurring again, install Firmware Version 1.3.38 to the AT-HD-SC-500.

Article ID: KB01333 

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