Page 1 of Dodgy picture

Hi All - can someone help me? I`ve noticed something weird happening to my TV picture (Aiwa 21" video combo) and I can`t work out if it`s the TV, DVD or Sky. The picture seems to have large pixels when the view is quite dark, and often the picture takes on a kind of monochrome sheene. Has anyone else had this? Could it be the Scart? The annoying thing is it doesn`t seem to do it all the time...I`ts worse on the DVD - Crouching Tiger was really bad - it would be monochrome every time a scene changed. I have incidentally changed the DVD player already (Yelo 800) with identical results.

Any info greatly appreciated - I want to avoid having the TV taken away for repair if there`s nothing wrong with it!

Cheers guys.....Arlic

Which signal are you using from your DVD player - RGB or S-Video ?

I`m pretty sure it`s RGB. I`m just using a SCART to connect the two....