Is the NAD T742 HDMI

The DVI adapter stops the audio. Use the audio out ports on the bluray player to connect an audio pair cable to the tv.

Are you connecting through a TUNER, or using video and audio feeds via cables or HDMI?

If this is your system;
http://www1.epinions.com/specs/pr-NAD_T742_5_1_Channel_Home_Audio_Receiver
It has two "digital optical" inputs for sound. The video doesn't need to pass through the receiver so, your HD components, box and Bluray player, should hook to TV directly then, providing your TV has digital optical out, you could run your audio out of the TV from a digital optical out, to receiver. This would allow you to select your video through your TV's menu and the sound would come through the receiver through the one input. You can pass your video through the receiver but, it doesn't have the best outputs to handle it. You also may notice lags beteween the audio and video if you go this route.

There are two possible issues. 1) The resolutions are mismatched. (output of the player and input of the TV) 2) the player can not confirm that the TV supports HDCP over the HDMI connection. Only 3 of the 4 HDMI ports are HDCP (high def copy protection) compatible.

Try a different HDMI port and make sure that you have the input set to the correct HDMI port. (There is an input button on the side of the TV as well as on the remote.)

The easiest things to check are turn off the Blu-Ray player and then turn it on again. Then press the Home button and navigate to the Setup Menu. Select Display and press the right arrow button, then select Resolution and press Enter. Then set the desired resolution and press Enter to confirm the selection. (Your TV should support 1080p from the Blu-ray player.) Then turn off the player since changing the resolution can lead to video issues.

I hope this helps.

Cindy Wells
(the manuals for the TV and the blu-ray player are available on line: http://www.vizio.com/vl470m.html and http://www.lg.com/us/tv-audio-video/video/LG-blu-ray-dvd-player-BD570.jsp Click on Support on either site.

Yes,put it in PCM stereo audio setting.Should work find with the Blu Ray player using the HDMI cable.

First, HDMI is not a perfect hook-up solution. Cable box connections via HDMI are notorious for being problematic. The best thing you can do is contact Samsung and get the latest firmware for your TV.
Samsung Customer Care: 1-800-Samsung (1-800-726-7864). If this does not resolve the issue, connect the cable box using Component cables instead of the HDMI. Component cables are HD also. I hope this was of some assistance.

It may be a firmware issue if hdmi works with other items such as playstation.
If no hdmi the main Pcb hdmi ports are bad and the main Pcb would have to be replaced.

Consumers cannot upgrade the firmware so a shop would be the only option.

hi, i have got the same problem and i realise that it was because i have two digital connection,one coaxial for the sound to a amp and a HDMI to de lcd for video, may be its your problem too.

I did solve the puzzle what I did was to, disconnect the HDMI cable and reconnected via component video and it worked well. I am still not sure why it wouldn't play with HDMI as all my other blu ray discs played OK.The TV is a Samsung 52in lcd.

i have had to replace the hdmi input board on these units to fix them.