UE55c6000 LED TV

I have had this model tv for 6 months now and whilst overall I am very satisfied I have an ongoing issue with the way the tv handles "blacks". They appear very grainy, especially at night time when ambient light levels are low, and always seem to have lighter almost brown shadowing in those areas. Sometimes there is no defifnition at all in very "black" areas. Anyone recommend which settings I should look at?

Reply 1 : UE55c6000 LED TV

Have you cycled the presets with PMODE button ?
Also under tvs menu you can adjust under picture/advanced/black tone.
I'm not a settings guru but that may help. Personally I also find the tv signal has bad colors at times but when a bluray or game is played I notice a big difference in dark area blotchiness IMO , whereas the games and bluray simply have a better picture quality feed to tv