Since the switch to digital tv in Australia my tv spliter wont work (it is realy old and needs upgrading anyway) I think all the televisions in other parts of the house (4 to be exact) nare connected using a coaxial cable. I now have a new Samsung smart tv and a home theater PC as well. I know very little about this and would the coaxial cables even work still? would any one be able to help me out and give me advice on a spliter since the one I just bought doesn't seem to work. Thank you very much for any help