I had a similar issue with the troll. Mine was broken, and the machine started using the target on the play field instead of raising the troll. After making the proper repairs, I could successfully test, but couldn't get the machine to start raising the troll. I had to "factory restore" game. In the original Williams menus. That cleared the credit dot and of course all my settings/ scores. But that was the fix. Might be worth a try.