Hi guys I’ve just finished rebuilding a wizard x220 with an omnibus f4 I’ve got it all soldered up but having trouble getting video all I’m getting is a black screen tried on fatshark goggles and box type. I’m using a hs1177 camera and a chaos fpv vtx and I’ve wired it according to this diagram can anybody give me any suggestions on what could be the problem thanks 
A black output from your VTX to your googles
Normally indicates your VTX is working but its getting nothing from your camera.
So check to make sure your camera is getting power and that your video connections are correct