My RGB Video experience with Genesis and SNES.

[Purkeynator]

nice, I plan on going RGB with my model 1 Genesis one of these days.

[Live_Steam_Mad]

According to what I read here ;- http://members.optushome.com.au/eviltim/gamescart/gamescart.htm ...it seems that the NTSC SNES has a higher voltage output than the PAL model ? and that might be what is causing my problems? I got the RGB SCART cable from a UK seller which oddly states "[this cable works with] Super Nintendo (PAL) - [as composite, I assume] but does not work as RGB without modification. Still provides picture but not as high quality." and "[this cable works with] Super Nintendo (NTSC/USA/JAP) - works as RGB."

Wish I could get to the bottom of what the problem is with the RGB output of my USA SNES not being accepted by my RGB SCART to S-Video converter (UK made) and not being accepted by my pj. And how come the same RGB output with the same cable works passing through my Pioneer LX60 in RGB passthrough, and also works fine into my Sony TV.

Cheers,

Alistair G.

[Live_Steam_Mad]

OK so I pulled apart the SCART end of my SNES RGB SCART cable and it has a 220uF cap on each of the RGB lines as I expected for an NTSC USA SNES to RGB SCART cable (yes I know USA doesn't use SCART LOL).

BUT it also has a 220uF capacitor on the Composite Sync line (pin 3 on the SNES multiAV to pin 8 of the SCART) which is very odd since all the web pages that I've ever seen state put 220uF caps on the RGB lines ONLY. I think that this could be the cause of my problems, especially when I look at the web page http://www.nfggames.com/forum2/index.php?topic=3413.0

Seller of the cable just told me that he gets the cable wholesale, and has no idea about the cable or what I mean at all

Cheers,

Alistair G.

[benevicious]

My snes rgb cable has caps in the same places, I did find the one on composite odd, it also has a resistor somewhere that I didn't see mentioned on the diagrams. picture looks great but it has a horrible audio buzz, the seller is sending me another one.

If that doesn't work I am going to get one from consolegoods.co.uk. I bought the pal version from them by mistake, internally it looks a lot cleaner than the cap added one so if the replacement cable from the first seller doesn't work I will go with them.

[Live_Steam_Mad]

Sorry it was a long day yesterday and I made one mistake in that last post. I meant my USA SNES RGB SCART cable has (as well as 220uF cap's on the RGB lines) got a 220uF cap on the Composite VIDEO line not composite sync. Yet all the web pages say to have NO cap going to composite video!

Pin 8 of this SCART cable is wired direct to pin 3 of the multiAV of the SNES (which is Composite sync on USA SNES, +12V on PAL SNES) like as though it's supposed to be a cable for PAL (where pin 8 goes direct to pin 3 at 12V for PAL SNES but on my USA SNES pin 3 is Composite Sync instead) which is odd since it's supposed to be an NTSC SNES cable, i.e. the NTSC SNES to SCART cable is supposed to have pin 8 wired to pin 10 on the multiAV which is +5V on the USA SNES, and supposed to have pin 8 wired to pin 16 through a 180 Ohm resistor.Although the cable has actually got a resistor on pin 16 of the SCART.

Those are the only two odd things about this cable.

Also I found the cable isn't shielded at all so no wonder I see diagonal lines when it goes through my Pioneer to my pj or goes into Sony TV.

I today tried bridging pin 8 of this cable's SCART (which has Composite sync from pin 3 of my USA SNES) to pin 16 (end of the 180 Ohm resistor, i.e. on the other side of the resistor from pin 16) so that pin 8 of SCART got +5V instead of (well in this case as well as LOL) Composite Sync. Made no difference. I did this with pliers live in the socket LOL. Neither did it make any difference when I bridged the red green or blue wires direct to their SCART pins bypassing the cap on each wire.

I am going to try and take all 4 caps off the cable and see what that does, if anything.

Otherwise I don't understand why my Sony TV locks onto the RGB SCART signal from my USA SNES, as does my Pioneer LX60D, but my pj and RGB to SCART converter from JS Tech do not.

Cheers,

Alistair G.

[Live_Steam_Mad]

Here is a picture of what my S-Video looks like from my USA SNES on my In76 projector. Note the diagonal lines / herringbone / crosshatch pattern. Anyone know why I get this or how to get rid of it?

Cheers,

Alistair G.

[ChuChu Flamingo]

Have you tried the SNES with svideo on a different tv? Could be the cable.

[Niode]

Here is a picture of what my S-Video looks like from my USA SNES on my In76 projector. Note the diagonal lines / herringbone / crosshatch pattern. Anyone know why I get this or how to get rid of it?

Cheers,

Alistair G.

I'm pretty sure that's just a quirk of how the SNES outputs video. It does the exact same thing over RGB SCART on my Panasonic plasma. Maybe something to do with how the SNES achieves colours outside of it's palette?

[Curlypaul]

Hey garbagejuicer, could you provide some more details on this cable mod?

Was thinking about making a cable myself and the one they have on mmmonkey has a mini jack wired into the back of the DIN plug. Would much prefer to get steroe out of the CD unit though

[matacks]

found one this monster cable was reported to work really well
http://www.amazon.com/Monster-GCGL300-S ... B000092WZ2