Ok, it's like this. Got a Virtua Cop 2, powers on, works great, except....
Sometimes (could be an hour, or a week) it'll go to a half a credit (2 coins to play), and it stays there. You can insert coins/service switch it all day long, and nothing happens. Still says half a credit.
Unplug the machine, plug it back in, works great until it happens again.
Put the board on the bench, ran it for about a week (24 hours a day), works great.
Really, there's nothing else in the cabinet that would cause this problem, I would think. Coin switches are not binding up or anything, they ring out ok on the meter, I can't seem to figure this one out. Anyone have any ideas??