I have an intermittent, but persistent problem in my Doctor Who that has me scratching my head...
Once every few games, 2 balls will be launched into the shooter lane. It never happens at the start of a new ball. It usually happens after locking the first ball into the Tardis, but sometimes upon ball save as well.
I have replaced the switches in the ball trough, in the shooter lane, and the launch button, to no avail. The switches (even the old ones that were replaced) test perfectly in the switch test, 100% of the time.
Any ideas for things to look at? I’m stumped!