I have a Samsung DVD-HD841 up converting player and the DVI connection on the TV doesn't work. I checked the Mitsu manual and nothing was said about turning the DVI on or off. I tried a DirectTV HD receiver with HDMI output and I used a Monster Cable HDMI-DVI and no picture. Other then this tube works great. I paid $1450 all in three weeks ago. Slight damage on the back of the Case but no biggy.