Did it ever work? If not, you have a warranty issue. (even so, in warranty, still a warranty issue)
Does the HDMI device work on other sets?
I have a LG 3D SMART TV model number 50PZ95. Virgin cable and LG DVD Bluray are connected to the tv via HDMI
the problem I have is when I go to input to select the HDMI a prompt message appears on screen and says HDMI is not available, it all works on scart and other cables but not on the HDMI slots I have changed all HDMI cables and checked all connections so i am now at a loss on what next to do.