Hi, i have DM 600, and i am using nova Greece. The problem, is that on some channels lets say novacinema1 or star or alpha alter etc, i am getting high noise, but on some other chans like discovery or history or nova cinema 2 it works fine. I have already changed my lnb, and the psu. Also i have checked the configuration or my dish and is ok. Any ideas? maybe faulty tuner? and if its yes what i can do about that?