IT'S ALIVE!!!
FINALLY got my package from Docent Electronics and rebuilt that cpu-driver board connector and installed those beautiful Ni-Wumpf boards. As of this evening, I have a working Black Hole! With some issues, of course, but I played my first games on it!
Issues:
1. When the ball enters the bottom playfield, the flippers don't activate and the "overhead" ( I call them Stadium Lights) don't turn on down there. I get a different sound effect (whoosh?) when it's there but the ball just rolls past the dead flippers, drains and kicks back upstairs. (And it says re-entry failed or something) What activates the lower playfield? The spinner before the entry hole registers, as does the rollover switch just before the hole. What am I missing? Where do those signals go??
2. Player 4 display cuts in and out. Like on for a while. Then off for a while. Not flickering. Probably a connector or cold solder joint, I figure.
3. A couple of the pop bumpers are flaky so...rebuild pop bumper boards with mandatory upgrades (if not present?) or buy 6 new board$$??
4. Oh yeah, the backbox spinning motor has a stripped gearbox. The motor spins but the wheel doesn't. What's the current best fix for this?
A few little things but, most importantly, IT'S ALIVE!!!