Hey Everyone,
I just came into possession of an old double diamond that is "set to tournament mode but not working". I have no prior experience working on slot machines so I thought it'd be a fun challenge. Oh boy was I wrong. After replacing the battery on the board, error 21 was thrown at me. I know this is a coin optics error, but I'm very confused because this machine has no coin or bill mechanisms and should only use credits(?). Is there anyway that I can set my slot to "tournament mode" so I can just hit the button over and over again to spin? I'm giving this machine to my grandma as a gift, so I want it to be as simple for her as possible.
I've uploaded a few pictures as a starting point, if you need any more I'd be happy to help. Thanks again.
P.S: The entire jackpot key mechanism is missing, so for the time being I've just been using a copper wire to jump the connections and simulate a key turn. I'm getting a new mechanism soon.