Welcome to NLG, and to the CEI world! Your machine is well recognized here, and we will
be delighted to help in any way we can.
Your 904 "game board" and 909 "motherboard," are the very earliest of Cal Omega's
move into the gambling world from the arcade machines they had been building. Casino Poker
was their first, and most common, model.
Before you do anything else, please..
1. Tell specifically what does and does not work: is there anything at all on the screen? If nothing,
do you get game-playing sounds when a coin is inserted? What lights come on, etc etc.
2. Post photographs, inside and outside, and especially of any are that looks damaged or altered.
The reasons for this are:
1. Casino Poker was built into four different housing styles, and the wiring differs between them.
Even within a single housing style (like "Casino Mini," which looks like a small slot machine), there
are versions with 10 buttons on the front, and with 15!
2. Many, if not most, have cut/disconnected wiring on the front door, in the area of the coin acceptor.
These are to bypass one of several coin reject- or re-route provisions, for owners wanting to use slugs,
tokens, or foreign coins; or who did not want to dick with fine adjustments. Such wire hacking & whacking
may have nothing to do with your current problem, and trying to "fix it" usually just introduces other problems.
As for swapping screens, you cannot use a TV or computer monitor without special conversion boards
and wiring. Let's see if we can fix what you have. By the way, burn-in on these machines is rarely a
problem: they were designed such that the picture changes very little during play, so you are unlikely
to see any burn-in while it's running.
So, whip some details and pics on us, and let us have some fun helping you!