I have a 1989 Williams Police Force (Prototype) pinball machine that has what appears to be a outgassed lower 16 digit display. I'm not 100% sure on that but it does have the little white dots of death on it that I've seen in other forums. Also the upper left display does not come on either (doesn't have white dots) but I'm not sure if that's just cause the lower 16 digit display is not working or that it is cooked too. I would like to find a NOS lower 16 digit display to solder in there if possible since this is the only known prototype that I know of but I don't know where to look or if there is a better solution to this problem, then I am all ears! Thanks!