Instructions
Check the sensor bar to make sure that the gun's signal can reach it. If the gun's signal cannot reach the sensor bar, the gun will not fire within the game.
Go into your game and click on the "Options" menu. Choose the "Controls" option and then click on the "No" option. Choose the sensor bar option that best suits your setup. For instance, if your bar is set above or below your TV, choose the option accordingly.
Calibrate your gun if the default calibration does not work on the TV. Go back to the "Options" menu and then click "Controls." Click on the "Yes" option under "Calibration." Point the gun at the calibration points on the TV when prompted to calibrate your gun.
Remove any additional lighting from the TV area. If there is excess lighting, the gun's signal will not go through to the console.