sync cleaner support

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  • October 28, 2018 at 4:34 PM #23461
    BuckoA51
    Keymaster

      any issues adding a sync cleaner

      October 30, 2018 at 4:05 PM #23506
      Anonymous

        Are you using a supergun in between MVS and OSSC, or is the MVS directly modded? How are you powering the MVS (and supergun, if applicable)?

        If you’re outputting CSYNC (to confirm, not sync on composite), then a sync cleaner would be pointless.

        October 30, 2018 at 4:13 PM #23508
        BuckoA51
        Keymaster

          no super gun power is from a 5V 3 Amp

          October 30, 2018 at 4:21 PM #23509
          nmalinoski
          Participant

            The only thing you need to add is a 470ohm resistor on the CSYNC line as I measured the voltage at 4.21V which is not OSSC friendly.

            If you’re using AV1, then you are correct; TTL should not be used on AV1, because it’s not SCART-compliant; however, AV3 requires TTL sync.

            So, you theoretically could simply wire your MVS’s output to a DE-15 connector and hook it into AV3 without a resistor, but I believe the MVS is old enough that it will probably benefit from the additional low-pass filtering that AV1 offers.

            October 30, 2018 at 10:54 PM #23515
            Anonymous

              Is anybody else using the same power supply solution without the interference that you are experiencing, and installed in the same location as yours? I’m guessing that the power supply is the most likely culprit, either introducing noise via the power lines, or due to proximity to components that are susceptible to noise (or both).

              Also, does the PSU have a separate DC and AC ground? If so, are they continuous? I’ve read of folks resolving interference by simply connecting the DC and AC ground points, specifically on HAPP power supplies, but possibly a solution on other models as well.

              October 31, 2018 at 12:24 PM #23523
              BuckoA51
              Keymaster

                ill try another psu

                October 31, 2018 at 4:10 PM #23526
                Anonymous

                  I was recently using one of those microusb charger adapters. Some no name brand from the local electronics store, and probably comparable to what you’ve got. It undervolts, under load, resulting in sync drop outs and introducing noise. The device I was powering accepts 5V-12V. I went to a 12V Netgear power supply (from some old abandoned network switch or router presumably…but in my mind, a more reliably built power supply), and the problems all went away.

                  Arcade power supplies typically have the ability to be adjusted, and that really is a nice feature, particularly when powering arcade hardware that has a wide range of specs and needs.

                  November 27, 2018 at 3:19 AM #23969
                  BuckoA51
                  Keymaster

                    another PSU was the fix

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