Audio with upconverting sony dvd with hdmi cable does not work

HDMI problems are very common. A poor HDMI connection will cause audio not to function, and ontop of that there are loads of devices that do not handshake properly with HDMI. Long story short its a real bugger sometimes.

That being said, unplug and replug cables. If you have a spare try it.

Now go into the setup of DVD, typically on Sony units you have to stop the disc from playing or open the tray. The press the "DISPLAY" or "SETUP" button to get into the menu. If you have the option for CUSTOM SETUP select it. Go to audio and set output to HDMI if its not already on it.

You may be able to change the different audio output styles on the DVD. Also from time to time in the TVs menu there is the option to turn audio on HDMI on and off.

Hope this helps,

Cheers