Quoted from ParisPinballAdct:boy how cool it looks! mamma mia... Twilight Zone baby.
so, i'm a bit annoyed because i have a prototype (or more accurately, a Pre-series model TZ #211) with the 3 magnets, the Powerfield without the inscriptions and the green inserts on the playfield etc.
i'm running ROM v9.4h however can't have the stacked multiball (and yes I did go in the settings to have the game allow it)...
looking more closely I can see that, although I do have the 3rd magnet in place, i'm not sure I have the opto installed on the sides...
maybe because, as Coyote said, they didn't bother?
anyway wonder if the fact that there doesn't seem to be an opto on the side of the 3rd magnet could be the reason why it is not doing the stacked multiball sequence.. ??
if anyone has an idea, maybe?
You have an early sample game, and yes, that would be why.
While they installed the magnet/magnet post into the playfield, depending on when your game was made, the wiring for the optos may have been left out. You can check by going into Switch Test. If, with all balls in trough, look at switches 71, 82, and 86. If those are not full squares like #84 is (or any other opto), then you are either missing the optos themselves, OR, they were just never wired in.
And yes - when the game boots up, it checks switch #82, which is the 'Upper Right Magnet' (labeled 'Unused'). If it shows closed on bootup, it will deactivate all effects that use the 3rd magnet.