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Monday 19 March 2018 at 11:34
I started experiencing a similar issue. Game plays fine for a while, then at some point when hitting either of the flippers (individually or at the same time) the game freezes (displays go off, no flipper movement, but sound continues.) Cycling power resets and then it usually works again fine unt...
Source: http://pinside.com/pinball/forum/topic/williams-firepower-randomly-drops-into-attract-mode#post-4288502