Saturn SCART quality issues

Discussion in 'Modding and Hacking - Consoles and Electronics' started by Druidic teacher, Dec 28, 2010.

  1. Alchy

    Alchy Illustrious Member

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    A fully wired SCART cable would make no sense for any game console. Sync, RGB, audio, ground. Anything else is likely unsupported by the console anyway, it's not like it needs bi-directional composite or whatever else.
     
  2. LeGIt

    LeGIt I'm a cunt or so I'm told :P

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    I think one of the other pins that doesn't normally get wired up is for th autoswitching on power on but fully wired it is thre. If you get a shitty lead, powr on the console, the TV doesn't autoswitch to AV. I was always too lazy to find the remote or fanny about hence for me, fully wired FTW :p
     
  3. Alchy

    Alchy Illustrious Member

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    I think most console AV ports won't support such SCART features anyway (check the pinouts), it's down to the TV to detect sync/signal and switch.
     
  4. LeGIt

    LeGIt I'm a cunt or so I'm told :P

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  5. Alchy

    Alchy Illustrious Member

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    I guess I was trying to say that "fully wired" is a misnomer. Some cables may have more than others but no RGB SCART cable has 21 wires going into a videogame console. No consoles have SCART ports ;)
     
  6. LeGIt

    LeGIt I'm a cunt or so I'm told :P

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  7. retro

    retro Resigned from mod duty 15 March 2018

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    If you're making a SCART lead like that for retail, you really HAVE to include composite. Not all SCART sockets on all TVs carry RGB, and you need sync anyway.

    Yes, the Saturn came with a SCART lead in the UK originally, and the RF cable was ridiculously expensive. Yes, it was RGB SCART - of course, it would have been pointless otherwise. And yes, it had composite too, so will work in non-RGB sockets.
     
  8. Druidic teacher

    Druidic teacher Officer at Arms

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    Last edited: Jun 22, 2017
  9. retro

    retro Resigned from mod duty 15 March 2018

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    Yeah, s-video would be pretty pointless.

    You COULD do composite on the same cable if you really wanted - just put a switch in the SCART connector heh. Again, not much point, of course!
     
  10. Xeauron

    Xeauron Intrepid Member

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    Hi everyone,
    I need some help if possible. I've nailed the problem with my official Saturn RGB cable, well Druid II nailed the problem actually. I've just confirmed it.

    Basically I'm getting a muddy picture through the official cable now and Druid, you suggested the 9v output on the Saturn had somehow blown. Then I saw this post:

    [​IMG]

    I de-soldered the 9v line (5v shown above) from the Saturn to pin 8, then I took a 9v battery as stated above and wired the neg to the ground shield and wired the pos to pin 8 (to the left of the resistor) and hey presto, the screen went blank for a second then came back in glorious crystal clear RGB.

    I then went about researching where I could find a 9v power source from the internals of the Saturn, and according to what I've read the 5 pins which stick out of the board and connect to the power board they have voltages as follows:

    1995 built PAL VA1 motherboard

    [​IMG]

    I found this on the mmmonkey guide, this should be right I'm guessing... (?)

    [​IMG]

    Though it looks like a different model...

    ________________________________________________________

    I then plan to run a cable from the 9v pin to PIN1 on the underside of the board where the AV output is.

    Would it be the same as the US/JP version?

    [​IMG]

    Bear in mind none of the components above seem to be in the same place on mine hence why I plan on a 9v bypass straight from the power board via the prongs.

    Here's mine: (sorry about the blurry shot)

    [​IMG]

    FINAL UPDATE

    Well I dissected a PlayStation phono cable and took the red insulated wire from inside, cut it to length and soldered one end to the 9v pin from the power supply and the other end directly to pin 1 on the AV output.

    It now works flawlessly with the official SCART cable I have in crystal clear RGB. Very happy I did this now as the other cable I purchased suffers from epic interference.

    Cheers fellas, thought I'd leave this here in case anyone else gets the same issue, now they know how to fix it.

    :nod:
     
    Last edited: May 28, 2011
  11. Druidic teacher

    Druidic teacher Officer at Arms

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    Last edited: Jun 22, 2017
  12. Xeauron

    Xeauron Intrepid Member

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    It's still a very noisy picture with the unofficialcable I bought from console goods (I think, it was last time I used it!). But the official Sega cable has a flawless picture now on my 40" TV. The edges are straight and smooth and the colours are solid and don't bleed or have waves running down them.

    As for the audio, I was incorrect on that one. There is still noise when the screen whites, however you have to have the speakers turned up uncomfortably loud in order to hear it, so it's not at all noticable at normal volumes right up to the normal high volume I like to play things at.
     
    Last edited: May 31, 2011
  13. Druidic teacher

    Druidic teacher Officer at Arms

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    Last edited: Jun 22, 2017
  14. Xeauron

    Xeauron Intrepid Member

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    Yeah, every time I've removed it I get the shakes as I know it's a bastard to replace. In fact the first time I removed it I though I'd broken it as the slot on the modchip itself is 21 pin female with a 20 pin ribbon in it.

    I was getting the orange balls when booting and no disc activity.

    Took me an hour of staring at it with a pissed off look on my face until the penny finally dropped that I had to slide the cable in over to the left in order for it to work.

    At this point I'd already filed the thing down to make sure it fit into the socket properly.

    Also it feels kind of flimsy as well, you can feel it flexing slightly as you push it in, always scares the shit out of me.

    By the way, if you can, try and get yourself an official cable. It's the cleanest picture out of any SCART device I've ever used on a larger TV.
     
  15. geluda

    geluda <B>Site Supporter 2012</B><BR><B>Site Supporter 20

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    My PAL Sega Saturn shipped with an RGB scart cable.
     
  16. 7Force

    7Force Guardian of the Forum

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    Yep, the Saturn shipped with an RGB SCART cable in Europe, and so did the Dreamcast. It's 2011 and Sony and Nintendo are still shipping their consoles with crappy composite cables, yeah, go watch some Blu-Rays with those! :lol:
     
  17. Druidic teacher

    Druidic teacher Officer at Arms

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    Last edited: Jun 22, 2017
  18. Xeauron

    Xeauron Intrepid Member

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    That was the main problem I had with my cable from console goods, the colours had lines running through them which was very noticable, though everything else was satisfactory (audio, solid picture).

    On the official cable the ground wire is exposed and wrapped around the rest of the wires in the wire casing as far as I can tell and wired to the SCART shield, where as the ground on the console goods scart was wired to one of the pins I think and was insulated inside the main wire casing through to the ground wire on the Saturn connector, and not used to reduce interference on the cable overall. Again, as far as I could see.
     
  19. Alchy

    Alchy Illustrious Member

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    The SNES RGB cable I got from consolegoods was shit too. Picked up a lot of interference.
     
  20. Druidic teacher

    Druidic teacher Officer at Arms

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    Last edited: Jun 22, 2017
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