3rd gen Apple TV, Sony Bravia TV (2009 I believe) As the title says HDMI (audio & video) cuts out intermittently, sometimes losing it completely but usually just cuts in and out with no discernible pattern; doesn't matter if it's hot or cold, been running a long time or just turned on. Tried changing cables, no difference. I can induce the behaviour and make it frap out if I jiggle the cable and it seems to make it better for a while if I unplug the HDMI cable & plug it back in. It's been doing this pretty much since day one. Any tips would be appreciated. A search didn't turn up anything useful.