If I get a new TV with a satellite receiver built into it, can I use and old Sky dish and receiver? The reason I ask is that I have a dish fitted that hasn’t been used for at least 20 years but I do have the co-axial cable running from the dish to a proper satellite point chased into the wall behind where we have the TV. Would I be right in thinking that at worse, all I’d need would be a new LNB and the dish aiming correctly?