Jameseh

Had Comedy Central HD on for a few hours in the afternoon and every so often line and square would appear across the picture knocking the sound off.

Now while trying to watch a repeat of 10 O'Clock Live on C4HD is impossible due to the fact the screen either goes black or just becomes pixelated. Pausing and resuming it eliminated the black screen and replaced by starting to jump backwards/forwards a few seconds at the same intervals instead.