Thanks very much for your answer. I have tried a new HDMI cable, different ports etc all no good. The tv and player were bought together as a bundle a number of years ago. It is just so frustrating. I'll try different cables.
I have tried using the HDMI cable, I can get the tv working fine, I can get a dvd picture fine but no sound. As soon as I turn the player on I lose the sound on the tv.