If you can, exchange it for another one from your retailer. While this isn't a common problem on the 6-Series, I've seen some reported symptoms online.
If you can't return it, then you can get it repaired under the warranty.
Keep me posted.
I just bought a LCD yesterday and I have been having trouble with the television just turning itself off. It happened a couple of times yesterday, however today it's been occuring pretty much every time I turn it on. Therefore it stays on a minute, some coloured vertical lines show up then the television turns off. I also hear a crackling noise when the tv is on. Could you please let me know whether this is a common problem that I could fix or whether it seems like a tech support problem.