Samsung LE40R74BDXEU -DEAD WEIRD PIXEL BANDS BLOCKY?

Samsung LE40R74BDXEU -DEAD WEIRD PIXEL BANDS BLOCKY

Hi All,

I have an "Samsung LE40R74BDXEU" LCD HDTV; My stand recently broke and I purchased a new swivel stand and fiitted it. A few days later I had noticed that all of a sudden I would get this fault of lots of pixels in bands across the screen. The fault does not appear when watching the inbuilt freeview. The fault only seems to appear when you select normal TV, SCART AV, S-VIDEO, Red, White, Yellow, HDMI - PS3 or XBOX360 or when you try and access any of the menus; ie: tuyrn volume up and down, EPG, etc...

I have uploaded some photos shown below; taken on my camera phone.
Does anyone have any ideas?

http://img207.imageshack.us/img207/192/photo0298.jpg

http://img134.imageshack.us/img134/455/photo0297.jpg

http://img18.imageshack.us/img18/7319/photo0296.jpg

http://img230.imageshack.us/img230/2723/photo0295.jpg