I have got a phantom 2 with zenmuse h3 3D gimbal using the hero port and a hero 4 silver. I have bought an Immersionrc 600mw vtx along with a no name £20 monitor and receiver. I soldered the corrosponding wires from the vtx to the phantom and turned it on. On other channels I was getting static but on channels around 5.760ghz I was getting a solid black screen. However whenever the gimbal moved a bit of noise came over so I know that it is connected. Yes the GoPro is turned on and there is no lens cover. I’m thinking of just buying a Molex 5 pin to GoPro plug to sort it.