Have a Phantom II with Hero 3 and RX-LCD5802 5.8 Ghz Diversity LCD Screen Receiver/Monitor. Hadn't used the system for a number of months and when I tried today, found that I was not receiving any FPV video from the Phantom. Good telemetry from the drone, just no video. Can't find any operating instructions and definitely nothing that shows me how to pair the monitor to the Hero. Thoughts?