As far as I know, you can't convert an S-video signal (Y/C) to RGB, simply because an S-video cable doesn't carry the RGB signals separately. Trying to fix this with a weird electronic circuit would just degrade the signal. The best bet would be to simple get an s-video (or composite) to SCART connector. It wouldn't give you any improvement in video quality but it would allow you to connect the cables to a SCART input. Once the signal goes through a composite cable, the RGB signals have already been combined and the damage to the signal has already been done.
> > > There's was a cable by Blaze that would convert an SNES/N64/GC S-video signal to RGB (SCART). The cable has a small box attached with some electronic circuit in it. The main component was some Sony IC.
> > > At the time it was the way to have RGB output from your Nintendo 64 before internal RGB modifications became known.
> > > I would really like to get hold of that cable. Does anyone know a source for it?
> > well, for one, SNES outputs RGB anyways.. and second, the quality of that Blaze cable is VERY mediocre, it's about as bad or worse as standard composite signal.
> Yeah, but I was not thinking about using it for SNES. I would modifiy the connector to accept standard composite or s-video input. I really need to find an external NTSC to RGB (SCART) box to use my PC Engine, GameCube, etc.