No, I didn't know about the 'disable YouView' mode... which I have now done. I now have the Satellite tuned in without a problem. Thank you for the steer.

BTW - I have other Sony products (cameras) that come with pretty detailed user guides covering virtually every menu/submenu. The hardcopy Reference Guide and the online info seems fairly scant. Is this par for the course with Sony TVs? 

Once again, thanks for your help and the suggestions of others leading up to the 'fix'.