If you have one of the Foxeer Arrow Micro Pro cameras (HS1209) and have noticed incompatibility with certain OSDs, inability to maintain a sync lock with the ImmersionRC Rapidfire 5.8 Ghz video receiver (this is a known incompatibility documented here:
rapidFIRE Camera/OSD/FC Compatibility) and other weirdness here's a quick mod to bypass the AC coupling cap and DC couple the video output from the camera. (Note: you will need to confirm that the video signal is going into circuitry that can handle the DC offset that will be present)
Here's what the video line looks like before the change: (Note: The video line was terminated into 75 ohms as is standard)
All black video out:
Bright light on lense:
Mod:
Solder a thin wire across the cap pictured.
Video output after the mod:
All black video out:
Bright light on lense:
Hope this helps someone out there.
~pk
