I have a STTNG that I picked up us a project and have it almost all working. If I go into test modes everything seems to work fine, the game seems to play fine, but I have two oddities.
1. Sometimes in a multiball mode the ball can end even if there is a ball (or more then one) on the playfield still. I'm guessing this is an erratic opto in the trough so am trying to track that down. May be related to problem 2, but not sure.
2. This is the one that stumps me. If you choose Lock from your skill shot selection and launch the ball the following happens:
-Single Target Drops, Ball 1 goes in and says Ball 1 is locked
-Ball 2 loads, Single Target goes up. When you launch ball 2, Single Target drops (not falls, but is forced down) and Ball 2 locks
- Ball 3 acts just like ball 2
- Multiball starts immediately.
I don't have a lot of experience playing a STTNG, but I am guessing this is not normal operation. In the test modes I can put the single target up and down without problems, and it seems to be ok the rest of your game, but will drop whenever you launch a ball.
I'm suspecting it may be a diode on one of those switches, but really not sure.
Any ideas of what to check or if anyone has seen this before I'd appreciate the advice!