SNES scart cable rgb help.

Started by famiac, June 09, 2012, 02:42:10 am

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famiac

Thanks a bunch! I got it working! Yes. But i think it looks worse... XD

For some reason the colors look washed out. They bleed into each other. It's so weird, i thought rgb was supposed to do the opposite... Any idea why that's happening?

Edit: i turned brightness all the way down and the picture is waaaaay better but there's still that bleed effect but it's faint. Any idea what that is?

133MHz

Some pictures of your display / wiring / setup could be of help. ;)

For the record, my Sony PVM-1351 displays the RGB + CVBS as sync of the SNES perfectly, RGB lines decoupled by 100µF electrolytic caps and everything else wired straight through (modified PAL SNES SCART cable + SCART to BNC box).

famiac

Im leaving town tomorrow morning. Ill take pictures in a week when i get back

untinip

You're using a PAL SCART-cable with an NTSC SNES, right? Then, as 133MHz said, you need to add a 100µF electrolytic capacitor to each R, G and B-line. See this page:
http://gamesx.com/wiki/doku.php?id=av:nintendomultiav

The capacitors remove the DC offset from the signal. That's probably why you get such a bright picture.

famiac


untinip

Yeah, I meant 220µF. I was thinking of my Nintendo 64 RGB-booster again... Please post some pictures when you get back.

famiac

I definitely will. Thanks to all for all the help!

famiac

Could it be possible that the picture is getting interference in my homemade adapter? It's not shielded at all, the wires are open, the wires are super thin, and everything is exposed. (lazy as hell i know, but i just wanted to test before spending 40$ on a proper adapter) The wires are really short though. (2-4 inches each)

133MHz

Yes, that's why I asked for pictures of your wiring and setup, even though 15 kHz video is usually quite forgiving of bad cabling.

famiac