Just revived a Black Hole and having some questions with gameplay...is there a normal "timeout" that if I don't do something/score/hit a certain target the lower playfield shuts down? I've got a manual & have reviewed the gameplay/rules in several forums but can't see anything that indicates this is "normal" behavior. I also can't see anything in the tech forums that this is a common problem.
The game was inherited and just now gotten back into apparent working order. I had to replace a coil, transistor, and a couple of fuses and other than a busted sound card I think everything is in order. However, when I shoot a ball through the Gravity Tunnel to the lower playfield, the play is only active for a few seconds before everything on the lower playfield deactivates and the ball drains/is returned to the upper playfield. Sometimes (but rarely) I get a longer play on the lower field.
Thank you in advance for any hints or tips!