Alternate A/V points in SNES...

[goombakid]

My SNES's Multi-Out cannot display composite video correctly. There's glitching in graphic images. I've been planning to do a standard A/V jack mod to it, thinking it was the connector itself that was causing the glitching.

By tapping into the pins on the mainboard from the Multi-Out (pin 9) for composite video, it still gives me the glitching. I found another video out point by the RF box. Tapping into that gives me a stable image, but the colors are dark and dull.

Anyone know if there is an alternate point for composite video? I'm not hoping for any RGB preaching, I have my own reasons to go with composite. If there is no alternate point, is there any way for me to boost the video image from the RF video? Thanks!

[Anapan]

I don't know if it'd work on a SNES, but the NES2 AV mod on GamesX is essentially adding a video signal amp for the low powered signal going to the RF modulator so it can power both video output methods. Sounds like the same thing you're doing.
http://www.gamesx.com/rgbadd/nes2avmod.htm

[Hatta]

Have you tried s-video?

[Hobie-wan]

Are you getting a pixelated stripe about 1/3 of the way from the left? I get that on my EDTV. It is usually green on a black background, but it comes and goes. I only get it with composite, not s-video.

[goombakid]

I may try that RF amp, s-video if all else fails. I'd rather source parts locally rather than special ordering them, hence why I didn't do the s-vid mod in the first place.

[Hobie-wan]

The reason I was asking if your issue matched my description is because I think in my case it's a side effect of old composite output on a more modern TV so pulling the signal elsewhere in the system might not help. When I have my SNES hooked up to my current TV I use s-video, but if it has been put away and I just need a quick test I'll grab a composite cable instead so that's the only reason I know the issue exists for me. It might be some sort of overscan issue with composite.

[goombakid]

Well, with Mario Kart, best way I can describe it is...it's like when you watch a scrambled channel. But it only happens with Mario Kart. With other games, I get full garbled lines across the screen.

This is the only console that does it through composite. I'm running all my old consoles through composite, they all yield clear pictures. It's only my SNES that's doing it.

Like I mentioned, if I pull the video off from the RF Video point (marked on the bottom of the mainboard), I get clear video (no glitching or the scrambled channel effect), but it's dark and dull.

I may break down and get an S-video cable, but I'm worried that the Multi-Out connector itself is bad. So regardless of what video output I use, it'll still yield the same anomalies.