I recently purchased a new HDTV (Sony Bravia KDL52XBR5). My digital cable box has DVI output and the TV accepts HDMI input. I purchased a DVI-to-HDMI cable which provides the video signal and am using composite audio. Everything works fine except every so often, the video signal cuts out. I have waited for just over 10 minutes for the problem to correct itself, but it does not. Simply turning the TV off then on again fixes the issue. I have also watched movies and played video games via component video and the problem does not exist using these cables. I have turned off all power management features to try and isolate the issue. Does this sound like an issue with the cable, or the TV? What do you recommend?