Stars needs all of it's indicator lights! Very important for decision making.
After replacing a few more sketchy light sockets, it was time to hunt down the bad transistors.
The manual for Stars is a bit of a mess. Go download it at IMDB, page 5 is a long list of corrections for the lamp driver board.
On top of that? We found that even the CORRECTIONS had a mistake!
J1-10 is listed as SPECIAL WITH WHITE STAR, but we confirmed it is actually just the WHITE STAR.
So we proceeded carefully with the transistors we had. But J1-10 needed a MCR-106 transistor, and I only had bought 2N5060s. So the game will be missing that single light.
BUT, the rest are now working!
With the light board removed, we also noticed Capacitor C1 was disconnected. Looking at the schematics, I don't quite understand where J4-3 connects to, but it's back connected now.
Lamp driver A5-J4-3 connects to A3-J3-16, on the voltage regulator / solenoid driver board.
So looking at the schematics, I really think this capacitor is there to connect two voltage test points, so probably not critical to gameplay.
The wires connecting the left flipper are now sealed properly, with the flaking electrical tape removed.
At this point? I think we might just be one transistor away from a fully working game!