you do know that the few 'neptunes' that actually exist are just sega 32x's jammed inside a genesis 2 case, right? Thus said, only a select few genesis 2's can be s-video modded. So open it up and see what makes the chipset are.
I dont know electronics i just know about soldering anf knowing how to solder the hard stuff. im not a hacker like the rest of yall .
i just need info on how to put it together. i go by the info's i get off you tube and thats how i do mods like region and stuff like that.