ariyasu

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  • May 2, 2022 at 6:10 PM in reply to: Super Famicom Audio/Video Issues #53170
    ariyasu
    Participant

      Hello all again and sorry to bump an old post but I fixed the issue today and thought I would share the solution.

      First I did a full system recap and the problem was still there.
      Then I added 10uf decoupling capacitors to C90 to C95 as suggested in the link eatnumber1 posted above. This also did not fix the issue.

      This weekend was a bank holiday so I decided to mess around with it again and see If i could get it going. A user on discord suggested I try
      a different power supply, so I tried a Sega Mega Drive power brick, and the ugly vertical lines I had became ugly diagonal lines. This gave
      me something new to google for and I found this post by FirebrandX
      https://shmups.system11.org/viewtopic.php?f=6&t=43689&p=1312908&hilit=snes+apu+subcarrier#p1312908

      My Super Famicom had a diffrent board version than the one listed in the post. Mine is SNS-CPU-RGB-01 instead of APU-01,
      but I figured I would try it anyway. After lifting the leg and testing the image is crystal clear 🙂 so I am very happy
      and now I am off to play though Zelda.

      TL:DR Lift leg 3 of PPU-2 to fix awful RGB interferance on SNS-CPU-RGB-01 and APU-01 boards.

      View post on imgur.com

      June 4, 2018 at 7:38 PM in reply to: PAL Sega Saturn Refresh Rate #22008
      ariyasu
      Participant

        Normal for PAL and NTSC or just PAL ?

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