Because i lack the space for another cab (apart from my centipede) im building a small jamma rig to play some boards on my tv set. I have some ATX psu's lying around i wanted to use, however they all lack a white -5v line. Would most boards work without this -5v? I noticed some systems like Atomiswave not even requiring one anymore, would my arkanoid/turtles/final fight work without one or shouldnt i even bother trying

Many JAMMA games tend not to use -5V. A notable exception, however, is Mortal Kombat II and perhaps other Midway/Williams PCB which require -5V for the audio section.

> around i wanted to use, however they all lack a white -5v line. Would most
> boards work without this -5v?
> would my arkanoid/turtles/final fight work without one or
> shouldnt i even bother trying
>

Afaik it's mostly older game that need the -5 example.. Rastan Saga and Double Dragon.
Also even if there is no white wire, there could be a -5 spot on the PSU PCB so you could solder a wire yourself.