Scrolling Flicker for 263 PS1 via RGBS?

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  • May 5, 2020 at 5:58 AM #37524
    Guffman
    Participant

      Hello. I have my PS1 playing Chrono Trigger on my lovely OSSC (1.6) via RGB SCART. I’m using an Insurrection Industries, specifically the PS1 cable (not the PS2 one), SCART cable, and my PS1 outputting 263p/lines via Line 4X mode. However, regardless of which settings I use regarding LPF, linemult, etc., I can’t seem to lose this chunk of static scrolling across my screen from bottom to top. I have not had this issue outputting 240p from my SNES on any game, though I haven’t tried many. I’ve recently played my PS2 and seen what bob deinterlacing does on the OSSC, but this doesn’t appear quite the same. I took two quick videos on my phone (best I can do unfortunately), but I’m not sure how to attach them here. Here’s some Google Drive links if I can use those?

      Video 1

      Video 2

      It almost looks like a rough CRT connection, pretty gross on a 4K monitor. I’ve seen many resolutions on this monitor before, like 540 and 960p, so I know it can do those weirdish ones. I should mention too that this same effect occurs regardless of which game I’m playing… Any ideas? Thanks for your time, and for reading!

      May 5, 2020 at 9:29 AM #37530
      BuckoA51
      Keymaster

        Looks very much like powerline interference to me. Could be failing caps in your PS1s psu or perhaps a low quality DC power supply on the same power strip?

        May 6, 2020 at 1:07 AM #37554
        Guffman
        Participant

          I tried unplugging every device in the power strip but the OSSC and PSOne (to clarify since it does have an external power adapter). No luck. If you’re right and it is a power issue, could it be the OSSC’s power supply? It does seem pretty cheap, and I ordered it from a Spanish retailer instead of videogameperfection proper, but everything that came with it seems pretty legit and I have had no similar problems with other systems. I’m using an official PSOne external power brick and cables.

          As a side note, I also can’t use Line 5X mode at all with the PS1 in 263p, but I can with the SNES… Is that normal? Aren’t they both 240p? Or does the SNES just not overscan as much, if that’s the correct term? Thanks for your answer by the way, I appreciate the timely response, and 9 Volt!

          May 17, 2020 at 5:40 AM #37933
          Anonymous

            I have a similiar problem, the scrolling flicker is exaclty the same as shown by @Guffman but with a PS2 via generic component cables. However, I’ve tested a Retro P4 PC via VGA and the image is crystal clean, no wave noises or interferances at all.

            May 30, 2020 at 6:45 AM #38349
            Guffman
            Participant

              Not sure if you found a solution, but my problem was in fact a power issue. Apparently I’d been using an off-brand power supply this whole time, and a PS2 one to boot! As soon as I swapped in an OEM PSOne PSU, the console performed beautifully! With that in mind, I’d say you’re likely dealing with a power issue also if it looked just like mine. I’ve been using generic Tomee component cables on my PS2 as well and haven’t had any issues with them to this degree. Is your PS2 using an official power cable? Good luck!

              May 31, 2020 at 1:53 PM #38392
              BuckoA51
              Keymaster

                Thanks for letting us know how you solved it!

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