Summary: I think my AVR300 has developed a problem. Setup: I put a Roku digital media box and a DVD recorder through the component connections of my AVR300 (my DV29 goes direct to the display), because the screen simply doesn't have enough high quality inputs. Problem: In the last couple of weeks, after about half an hour or so, the amp has taken to cutting off the video. Audio continues as normal. I can't see any other component that could be causing this, other than the amp. Thoughts as to the cause? Or is it back to the dealer?