Hi Bremax, no if you've changed the battery and made sure the polarity is correct, you should be ready to fire it up. Chances are it will go to the 61 error. Open the door or keep it open, press the test switch for a few seconds. It might make a ding but doesn't always, but the display should change to 61-1. Then close the door and latch it and turn the reset key one time. Displays should clear and after a few seconds it should initialize spin the reels and the insert coin light come on and be ready to play. If it goes back to 61, start a new thread and we'll deal with your problem by itself.
Dave