Got a Williams system 6 Laserball that has some coil issues.
The game boots up just fine and goes into attract mode.
Credits go on just fine and the game starts and serves up a ball to the shooter lane.
Most switches work and score and flippers flip just fine.
However most of the coils do not fire at all.
No pop bumpers, drop target resets, out hole plungers do not work and slings do not sling.
I have tried grounding the TIP's on the board and can get only three of them to fire. one fires the left ball saver coil, one fires the ball eject to shooter lane coil and one fires the left sling shot. All other TIP's do nothing when grounded.
The left Sling firing puzzles me a bit because while it fires when grounded, it will not fire when the switches are hit during a game.
Any ideas are much appreciated.