Picked up a decent 300 this past weekend. Overall the game looks good but has a couple significant issues.
On starting up, reels clear and all but the ball won't eject. The O relay never engages. Followed steps in another thread (https://pinside.com/pinball/forum/topic/gottlieb-em-repair-help-ball-wont-eject#post-515142) and have verified that the coil for O is good but the instructions for the switch on the O relay to test, couldn't find wires of the colors mentioned for Royal Flush, not sure if they should be the same or different. I do have the manual and schematics with the 300. So I have verified that both the outhole kicker and O relay coils work. When I manually hold in the O relay the sequence activates the ball return coil like it should.
Other issue is that sometimes in bonus collect (saucer) the game will just start kicking bonis balls and not stop.
Now, a couple things about this game. Clearly at some point some wiring work was done. It all looks clean, but there are lots of wires that appear to have been added or replaced. Many of the relays have wires going to one of the relay coil lugs from, usually, a bottom switch on said relay's stack (NO but so that it will activate). These seem like they would be the switch for each relay to stay closed but strange they would be wired in newer wire than the original game wiring.
First I need to figure out why the O relay isn't ever activated. Tried checking switches on Q but they seem to work. AX relay had a wiring fix/change as well where one wire is strung between three different switch levels on that relay. A wiring diagram would possibly be handy here since really reading the colors on dirtier old wiring isn't always easy.
Ideas? One thing I can't make out is which stack on O would be the O switch.