Skerdi, I'm astonished(not)to learn that the cable company wasn't helpful. Assuming that's the cause of the noise(when you disconnected the incoming TV cables the noise stopped)there're cable TV isolation transformers to put on the cable input(before the box)available from sources such as Parts Express. Another way is to break the loop at the video cables between your player and TV. The idea would be to have the center conductor(s)making contact in the TV input, but the outer shield(s)not making contact. Partially withdrawing the cable(s) so that only the center conductor is still making contact, to verify that the noise stops, could be tried. Assuming that it works, little strips of plastic film or even paper could be fashioned to keep the outer shield from making contact even when the connector is fully inserted into the TV.
