Quick thought did you try adding a credit? I can’t remember if free play is a physical switch on the board or a menu setting...if your battery is dead it will boot up to a default setting which probably has free play off.
Quoted from crazyidahoan:I have a Firepower II machine. It was working fine and now I can't get a new game to start. I'm a total newbie when it comes to pinball ownership, so thanks for your help in advance. I have tried going through the diagnostics tests and when I get to the switch test it shows the #9 (outhole) switch is closed. If I pull the pinballs out then the switch is now open again. I'm stumped as to where to go from here. I did not run into any other diagnostic errors when cycling through everything. I also checked the CPU board and sound board self-tests and they all passed.
I've seen some things online about the trough switch, but I'm not sure it that's the issue since it seems to recognize the ball by showing the switch is closed. The previous owner mentioned this happened every now and again and showed me a wire that would get caught sometimes under the #10 switch (right ball ramp). I was able to successfully get it working a time or two using this trick, but unfortunately that doesn't seem to work anymore. And it was pretty obvious when that wire would catch. Now the wire is not caught. Thanks,