PHANTOM 3, PROFESSIONAL, 4K CAMERA AND GIMBAL ASSEMBLY. I BRING THESE CAMERAS BACK TO LIFE BY REPLACING ONE OR ALL OF THE FOLLOWING COMPONENTS; YAW ARM, ROLL MOTOR BRACKET ASSEMBLY, CAMERA MODULE, MAIN CIRCUIT BOARD ASSEMBLY OR RIBBON CABLE. ALL HAVE UNDERGONE FULL FUNCTION BENCH TESTING ON MY P3 PRO QUAD WITH DJI GO APP. CAMERA IS READY TO PLUG AND PLAY. MOST UNITS ARE PRISTINE, BUT SOME MAY HAVE SOME SCUFF MARKS FROM PREVIOUS USE, DUE TO THE FACT THAT DJI IS PAINTING SEVERAL ALUMINUM COMPONENTS, RATHER THAN ANODIZING.