Our landlord has very kindly presented us with a new Nordmende NM3296M4 Saorview Digital TV. Unfortunately the UPC is disconnected, so we have no TV service. I re-installed the TV Stations from scratch and all the Saorview stations loaded up fine, however on either the existing UPC aerial or an indoor aerial,I cannot get any TV station(s) on screen. The manual is of little use. Can anyone help me please ?