OSSC init error -2

NewHome › Forums › OSSC, OSSC Pro and DExx-vd isl › OSSC – Discussion and support › OSSC init error -2

Viewing 6 posts - 1 through 6 (of 6 total)
  • Author
    Posts
  • June 27, 2017 at 5:20 PM #13534
    skullknightx
    Participant

      Made a terrible mistake yesterday and used an incompatible PSU with my OSSC. never put psu’s with identical tips in the same area . unit now displays ” Init Error -2″ on boot. Just wanted to check to see if anyone has seen this issue in that past and or if there is a potential resolution path. I sure hope that it is not bricked, this is the center piece of my scaling set up and pride / joy. any help would be greatly appreciated.

      June 27, 2017 at 6:19 PM #13535
      Morpheus_79
      Participant

        What was that incompatible PSU you are talking about? Had it the wrong polarity? Too much voltage?

        According to this post:

        Init error -4

        “Init error -2” = Error: could not read from THS7353

        So there seems to be a problem with the video amplifier IC… or at least with the communication with it. Could be a damaged regulator (TLV70033/U6) or the IC (U17) itself – but that’s just an amateur guessing.

        June 27, 2017 at 6:43 PM #13537
        skullknightx
        Participant

          To much voltage, the psu was rated for 12v of output. the unit did not come up which is how i caught the mistake, immediately unplugged and attempted with the correct supply. i cannot be completely sure that this was the source and not a strange coincidence however that is most likely wishful thinking. good find on the error breakdown, i am going to take a closer look tonight and see if i can figure anything out / take a closer look. I really appreciate the input

          June 27, 2017 at 7:08 PM #13538
          Morpheus_79
          Participant

            As far as i can see (and understand) the schematics:

            https://www.niksula.hut.fi/~mhiienka/ossc/diy-v1.5/ossc_v1.5-diy_schematic.pdf

            … the U5 (AP7361C) and U6 (TLV70033) regulators are directly connected to the power switch. Both are responsible for driving the video A/D converter (TVP7002PZP/U1) and the later one for driving the video amplifier too. So hopefully just U6 or (at worst) U5 and U6 were damaged and nothing else. Cause they are not only cheap to buy but easy to replace too.

            June 27, 2017 at 9:10 PM #13543
            marqs
            Participant

              Yeah, in best case only U6 is damaged. After replament I’d still measure all regulator outputs just to be sure they are in ok range.

              December 5, 2017 at 3:30 AM #17785
              NIampietro
              Participant

                This actually just happened to me, too (including having psus with identical tips). How would I go about replacing these parts?

              • Author
                Posts
              Viewing 6 posts - 1 through 6 (of 6 total)
              • You must be logged in to reply to this topic.