Stumbled on this once when I was streaming off my fone to the tv.
I used a mini usb to hdmi cable. Set the fone on camera video mode. I think the fone prompts you if I remember right when its plugged in. (so display it to the tv)
Now the video of the fone is displayed on the tv. May have to fiddle around a bit with it.
Might be worth a try to look around in the back of the tv
Unless someone on here knows what kind of mount release you have.
Good luck