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MAS Systems Jamma RGB-to-NTSC Converter Board -- Trouble wiring RGB connector

GhaleonUnlimited

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I have a super-old MAS Jamma-to-NTSC board I'm just now needing, and it never had RGB wired into it for some reason.

I tried soldering a male-to-male SCART cable , one side to the board and the other going to my XRGB-2+, but I don't get picture. I've just wired each line to what I'm pretty sure is the right SCART pin: R, G, B, Sync, and 5v.

I can't find any info on this board online besides one thread that no longer has dead links for all the pics.

Is there a better/simpler way to do this? I don't have a PVM so I use SCART for all RGB stuff, and I can't even tell what connector this was designed to use. (DB9? Even then I'd have to make a DB9-to-SCART cable right?)

Any help/insight really appreciated! I'm bringing my NBA Jam and UMK3 cabs to a Game Dev Convention June 8 and need to output to my projectors.

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