tekken 3

I have a Tekken 3 board that needed a lot of work, no boot when I got it, recap plus a couple broken trace jumpers later it boots but shows no video whatsoever through JAMMA. I feed it through a GBS, and initially got a no signal feed, but now get a dark gray screen. It plays enough that I could...

Anyone know of a way to unlock all characters in either of these games without leaving the boards powered on for 2000 hours? Thanks!

I posted my Tekken 2 recap a while ago, so here is Tekken 3 (Update: I've also posted my Tekken Tag Tournament Restoration). I replaced the SMDs with long-life 105C rated electrolytics. These pictures were taken before I replaced the missing 5R6K component, but after recapping it. I also cleaned...