sorry to get off topic, quick technical question. I have been working on a dracula for some people that was in storage for 10 years or so, and was in a humid environment. The boards have been untouched, and the game has hardly seen any play. i noticed one of the Batteris had minimally leaked down a few resisitors and one chip. I replaced the batteries, cleaning the battery holder and thought (lets give it a shot). After cleaning and address some minor mechanical issues to get the game playing, and running diagonists i finally got no credit dots, and we played some games (all switches and coils worked in test mode, the mist and all castle optos were fine).
After they had played it for a couple hours, i guess the shit hit the fan. The machine now has opto failures (even though they work in test mode) as well as the castle ball divertor coil not firing (getting power via multi meter). Also, the callouts are there, but the background music isn't . like i said, everything was working prior, could it be correct to assume that the machine 'was' working prior to the battery leak, then after a few hours the corrision caused these failures ?