Update and a bit more info.
If I hold a 9volt up to the connectors on the board it turns on. But now I have another issue. Airs up fine, solenoid clicks but then all I'm getting is a second "click" form the 3 way. no shooting.
Its really a bit odd. When I first got the gun I noticed the slightly dodgy connectors but it aired up and dryfired fine (fast too =). But when I tried to put paint through it, it would cycle just barely. It would load a ball and the next ball would just push that ball into the barrel. So i thought velocity was low. turned it up 1 turn and reassembled. I got a few more barely cycling low pressure shots before the battery issues arose.
Any help'd be great.
Tank output is 850 is that is relavent. roughly 3000 psi in it.