I have a 360 attached to a Sanyo tv by HDMI, and occasionally the tv will restart while I'm playing games. It takes roughly 5-10 seconds for the tv to turn back on and find the signal again. This does not turn off the 360, and in-game time still passes, as I've killed enemies while the tv started to restart. I've checked the connections, and they are not loose. There are no games that this is specific to: it's happened while I was playing Fallout 3, GTA 5, Assassin's Creed 4, and most recently Dishonored. I haven't found a solution to this very annoying problem yet. Any ideas?