I bought this helicopter for my 6 year old son for Christmas. After putting the batteries in and charging it per the instructions, the helicopter would not respond. My father in law was able to pop open the joystick controller and rewire all the wires to their corresponding pieces. He said it looked like the controller had burnt out on itself before we even got it. After finally getting it working, the helicopter was given a test run. Once it hit the floor, two of the blades popped off. The piece holding them together seems to have disappeared.