Hooked it up and everything worked fine for a few hours but then my picture on the screen went all screwy. Basically it looked like the pixelation they do to cover someones face on TV when they dont want to be identified but the whole screen looked like this. Bit strange I thought so turned it off overnight to let it do a firmware update. Tried again the next day and for several days afterwards but the same thing kept happening. Didn't seem to matter if I used HDMI or just the AV outputs the same thing would happen.
So I took the unit back to jbhifi yesterday and swapped it out. Plugged the new one back in, worked fine for a couple of hours and then bang, same problem.
So I've eliminated the unit as being faulty and have swapped both the HDMI cables and AV cables just in case but the problem remains. This suggests the problem must be between the aerial and the box somewhere.
Does anyone have any ideas on what I should check first? Just seems strange to me that it works fine for a few hours but then stops. When its working I get crystal clear reception, epg works well, everything just works. When it stops then freeview is unwatchable. Even turning off the box and just passing the signal straight through to the tv doesnt work well as there is a big horizontal line across the middle of the screen.
Any and all help appreciated :)