I recently installed a 10 apartment complex with DTV. In one of the apartments when the receiver was hooked to the TV picture was normal "tv was hooked up by coax" but when I added the satellite feed tv would hum and lines on the tv would appear. I did try different receivers and different ports on switch, also there was no signal degradation. Could something from the satellite system be causing interference that would affect the tv or is the tv to blame.
