Did you test the bulbs with a meter? They might look good, but actually have broken filaments from moving, age, etc.
Since most players top out at Space Cadet on GORF, you can take the last rank light out and swap it with Space Cadet to test. Also, those bulb holders can lose their contact spring, bend those out so they're making good contact with the light board.
While you're working on that assembly, pull that light board and reflow the solder on the header pins where it plugs in.
Reply to this thread and let us know if it's working after all that