Thanks everyone. I had to replace the gray cable of Part 81, the black antenna, the ribbon cable, and the yaw arm. First time I've ever had to tinker with this this, but it flew today! Thanks for your help!
I am trying to repair my Phantom 3 Standard. I need a replacement cable. What is the gray 8 pin cable coming out of the drone body and connecting to the motherboard? There is part #81 and part #42. What cable do I need? Here is a photo (not mine, but the right cable). Thank you!