Having some trouble - using composit (tried svideo and scart too) from my pc to tv, sound works on the side connectors and I just get a grey liney screen no picture or even distorted picture. On my old 12 year old 27in tv video out worked fine. Tried changing my res from 800x600 to 1080i but no change. The set has 3 scarts 2xrgb, side svideo and composit and is a 1080i 150hz non-interlaced hd compatible set. Help! Greg.