Before I even think of plugging in any power, I plan to remove the PC cage, blow out the dust from the motherboard remove the power supply and bench test first. I’ve previously learnt the hard way, plugging AC into an old desktop PC that was off for a few years. It went off with a kaboom 
As a bonus, found some loose change.
I will do some research on VP forums on this machine. Worst case scenario, maybe install a new PC running Future Pinball.
Anyone got one of these machines? Or suggestions/pointers?
I’ll post more info/progress, once I get one up and running, hopefully over the weekend.