Check to make sure there are no holes or tears in the inflatable fabric frame or in any of the seams. Make sure the zippers that attach the motors to the base of the frame are completely zipped up. Make sure that nothing is obstructing airflow into either of the two fans and make sure the cord is plugged directly into a wall outlet or into a heavy duty extension cord.
Another potential cause of improper inflation is a partial or incomplete connection of the plugs between the two fans. Please unplug your Airblown® Movie Screen from the outlet. Unzip the base of the frame at the first fan and locate the electric cord that exits the first fan. Find the end of that cord and the plug connected to it. Next, reaching through the opening of the frame base at the first fan, locate the electric cord that enters the second fan and the plug connected to it. Then, in your right hand hold the plug connected to the first fan while in your left hand holding the plug that connects to the second fan. Tie a simple, loose knot in the cord and connect the two plugs. Zip up the zipper at the base of the first fan and plug the item into the wall outlet. This should ensure that as the unit inflates, the plugs connecting the two fans will not become separated by the expanding base.