Just got mi MinimOSD and got immediately the overlay but no video from the cam.
Ok switched to NTSC no success.
Powered the OSD just with the APM conector, no success.
Power the hole OSD with 12v, no success.
Still no video Image but the overlay is correct!
(By the way the cam does work without OSD when I just connect it to the TX (TBS Cam and GoPro tested)