This was my first solid state project machine seven years ago. My TG's had a whole host of issues, but it was a great learning experience & also a lesson learned. This was the only project machine that I lost money on. But once it was fixed this is actually a very fun & challenging title. Definitely read through the Gottlieb system 80 fix sites as this should help you narrow what problems that need to be remedied. Could be a host of different problems so just be patient & one step at a time.