Unicable LNB Setup With Samsung TV

[paul.deitch]

Anyone have experience of this. TV works fine with standard LNB. Install the Unicable+Legacy LNB which works fine on the legacy output and then swop to the Unicable output and see nothing on the tv to select the unicable frequency. The cable is direct to the tv, no splitters, and the tv is Unicable capable.
Currently stuck and will have to reinstall the old LNB. Any ideas?