Ok so more info about this issue: When I open the coin door and add a credit by the micro-switch *think of dropping a coin in* the credit reel goes all the way up to 19 credits added *one at a time of course* and just keeps trying to add more. While this is happening the big thing on the back door that keeps track of credits *I think thats what it is* keeps spinning also.
2.) When it is doing this I turn the game off, then back on, and then push the start game button on the coin door and the coin reel goes all the way back to 0 credits and keeps going and doing the same thing as previously said.
So I am pretty sure it is a switch in the credit section somewhere, but not knowing anything about these I don't know which switches should be open and which should be closed.
Also the TILT light is coming on and staying on which I don't know if that is normal until the game fully resets itself, but I don't think it is. Someone on IPDB under comments mentioned a "paddle sensor" might cause this issue, but I have no clue what a "paddle sensor" is and cannot find any info on it?
lastly: What is the best to clean the million switches in this game because I really don't want to look at the cost of replacing them all!