Was there an answer to this one? I'm new to the site and owning a machine. I tried looking but I am not seeing any responses to this. I did come across a single line in the archives on another topic that discussed with the door open, turning the key and press "Max Bet" ?? mine has "Play 3 Credits." However turning the key with the door open only goes into a bill validator cycle regardless of which buttons I push.
My issue: Acquired an old(er) Sigma Treasure Wheel (Wild 7's with Red, Yellow, Blue color scheme). The history and anything about it is unknown. Was in a non-working condition.... There are some issues that I'm slowly working through, but my most immediate is the volume. I have to keep the wife happy. Once I finally got the machine to cycle and load the game the volume kicked on about giving me a heart attack. I have no idea what setting it is on, but it is loud enough that even with a pillow directly against the speaker plate it can still wake the dead in the other part of the house.