Hi, I recently purchased this TV and now when i watching any channel but freeview the picture is great and the sound is fine! However when i turn on E4 the picture is fine for about 3 seconds then i get a black flicker go across the screen and the sound disappears. The TV seems to have 'crashed' i can no longer change channels or do anything but alter the sound and turn off the tv. When i turn the TV back on it is fine and goes back to the last channel where it was working. e4 seems to crash as the info banner disappears. If i press to get rid of the banner early then the picture and sound stay and everything is fine but again the only thing i can do is volume and turn the tv off i can't move to another channel. also more annoyingly when i turn the tv back on again its stuck on e4 and i still can't change channel. I have tried leaving the tv unplugged for a while and unplugging everything plugged into the TV except the TV cable, i've also tried a full rescan and so far i have had no joy. Any help much appreciated Thanks! edit: i've also tried an old freeview box plugged into the tv via a scart cable, this worked fine on all channels including e4.