So i am a newbie when it comes to this.... I just got my first 2 arcade games, centipede and space duel in very good shape. The centipede is all working except there is no picture. You can play and here you shoot and everything, but no pciture comes up. first question, could something be loose fromt he move or is there a good chance the monitor is dead? Second question is there are no keys to the locks, the coin door is unlocked, but the back isnt. Is it best to drill it out?