• Try recharging or replacing the battery back in the Parent Unit. 
• Reset the units by disconnecting the battery pack in the Parent Unit and unplug both the Parent Unit and Baby Unit from electrical power. Wait about 15 seconds before reconnecting. Allow up to one minute for the Baby Unit and the Parent Unit to synchronize.  
• Is the unit turned on (green ON/OFF LED lit)? Press and hold the ON/OFF button on the Parent Unit to turn it ON. 
• Is the correct camera selected? Change the camera number, if necessary. 
• Is the video display turned on? Press the VIDEO ON/OFF button to turn it on. 
• When operating using batteries only, the Display will go blank after 5 minutes or 30 minutes or 60 minutes to save power (depending on video settings). The unit is still active and will give you audio alerts. You can reactivate the screen by pressing any button.