OSSC Pro – No Signal on AV3 RGBCS, but works fine on Retrotink 4K

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  • July 22, 2025 at 9:54 PM #66649
    alamone
    Participant

      As in the title.  Firmware is the latest AFAIK (0.78).  It was working fine before, but now it does not display anything on AV3 RGBCS.

      I tried power cycling, did not help.  Display source is an arcade PCB connected to a HAS, which outputs 15KHz RGBCS over VGA cable.

      Exact same VGA cable to Retrotink 4K displays fine.

      July 22, 2025 at 10:52 PM #66651
      BuckoA51
      Keymaster

        Do you have another source you can try with AV3?

        July 22, 2025 at 11:30 PM #66652
        alamone
        Participant

          I got it working.  I had to switch the jumper on the HAS from 75Ohm to TTL level for sync.

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