Need help with Sigma SG-150B Plus

[Mitchell]

I just picked up a Sigma SG-150B Plus Treasure Wheel machine and hit a stopping point on getting it going.

Upon startup the first hangup is it says " Bill Validator Error " but after closing the door, it says " resetting Bill validator " then the Reels start spinning and nothing stops them except a power off.

Reset key doesnt affect it, test button or front buttons don't do anything either.

does anyone have any idea of what to try?

Pictures to come soon! (wanted to get it functioning before detailing)

Greatly appreciate it!
Mitchell