I too an new here but have become pretty good with the older IGT stuff with eproms. Not sure about this MFGr but the small cup on the board and the small cup on the prom probably should be together. (same direction.
Ive never seen a board where the prom didnt occupy the entire slot that may be normal I suppose but weird. But the machine is 1980's and the pros here will definitely help!!
COOL OLD MACHINE!!!!
Are you talking about the proms that are in sockets that are larger than the prom? If so this is somewhat common.
SirRicktov: Does the game play blind? Meaning, will it accept a coin and let you bet? Is this problem isolated to the video? And yes, if you get the white line only when flipping the switch, that is a setup switch which gives a horizontal line for initial setup of the CRT. You don’t need to do that.
There is a ton of troubleshooting that would need to take place. The 5v circuit needs to be tested to verify it is clean. All those caps should be tested. There is no way to know if any one of those ICs has failed without testing each one. In other words, you need to decide how much time you want to invest. I have some old machines that I tinker with for years hoping to find the silver bullet.the machines will never be worth the time we put into them so you need to decide if the game has value to you other than financial return.if you get it working it might be worth $250.
Chris