I just sold my Flintstones and the new owner got it home, played a few games and said there is now a problem with the balls loading into the shooter lane from the ball trough. I never had an issue with it and he feels I slighted him so I am trying to get some information for him to troubleshoot. I would first test the switches in the trough and shooter lane to make sure they were registering properly, but that wouldn't explain to me why the game couldn't provide enough power to kick out the ball. He also says that the game is trying to fire/shoot the ball (but no ball is loaded) by itself.
The right number of balls are loaded in the game, at least when it left here.
He has no internet right now so I can't show him tutorials on how to test switches, etc. Just trying to gather any information or resources I can provide to him which will help identify the issue.