Irish Saorview, it seems the tuner is not working at all. Tried all the usual tricks, scanning the exact frequency with bandwidth set to 8mhz, setting it to Italy etc. I'm back on Hyperion as this is a show stopper.
For you, and anybody else having issues with Terrestrial tuning, the best solution would be to complete the previous tunings. So you need to delete the LAMEDB file from /etc/enigma2.
Telnet or use PuTTY to your box_ip
At the spark7162:~# prompt, type the following
rm /etc/enigma2/lamedb