have replaced 2 motors and their esc"s.as well as replacing the receiver board and main board. the camera and gimbal were destroyed. to sum it all up i have the craft close to flying again,BUT need info for trouble shooting the connection between trans & rec. the main led comes on solid green,the trans indicates mag error and no gps. not clear if trans is binding or not. when able gps mode it turns its self off as soon as leaving that screen. i need major assistance to bind,calibrate and just found out ,assinging the esc"s. pleez help need to fly!!