Just unboxed my acdc pro and the cannon is not firing when fire button pressed? Any one else had this problem?

Apart from this small prob machine is awesome, very well packaged, mint condition, full credit to Stern, wife and kids all love this game, this game is 100% keeper in my personal collection.

Had this problem on 1 of my machines. Check the Tan/white Green/yellow connector in the back of the cabinet. Mine was unplugged, this should have fixed it but found a broken wire as well in the back box loom.