I have two phantom 3 pros and only one will the camera work in, the other one will not show a picture and is giving a lost signal. Cant figure out what part in the drone will enable the camera  to work. could anyone help with this issue thanks.

Camera works great in my othe drone, has new ribbon. Thinking it could be a receiving module?  any thoughts?

OK lots of 'lf's', 'maybe's' and 'perhaps''. Need a bit more info such as does camera faulty P3P start up normally? Have you upgraded software etc, etc?

My phantom 3 also will not connect to live camera streaming have had trouble since last year when I did the updates. Have tried downgrading firmware nothing works.