ACDC Premium. This game is on location in a local league, so I don't have direct access to it, but I am friends with the techs that work on it.
Occasionally (maybe once in eight 4-player games), the ball will auto-launch before the next player steps up to the game. It is not set to auto-launch after a certain amount of time.
There 5+ times I've seen it happen over a couple years it always seems to be on ball 1 for 2nd, 3rd or 4th player in a 4 player game. It will lock in TNT as the song selection then auto-launch, so I thought maybe it had something to do with the TNT targets resetting after the previous player's ball and maybe a switch issue there, but I wasn't able to reproduce the problem simply by dropping the targets with glass off and ball still in the shooter lane.
I guess a more general question is what could cause the ball to auto-launch? If certain switches are hit on the playfield when the ball is still in the shooter lane will it auto-launch, or is it possibly the action button activating? The action button doesn't ever activate incorrectly.
There is a recurring problem with the lower playfield standup targets by the "eyes" where the targets get bent to be behind the post to the side of it, and I'm not sure if that is related.
Has anyone else had a similar issue and/or what is the best way to reproduce the problem or figure out what is causing the auto-launch?
Thanks for your help.