Yes, I have.
Still says No Cable Connected.
No, goes straight to No Cable Connected and asks to check blu ray settings - which obviously I can't via the TV.
No, the player hasn't worked with the TV at all.
Have tried that as well and no different - still no connection.
I don't have access to a UHD TV (4K compatible) so will need to take it into a store. Thanks very much for your help, much appreciated!