2013/4/14 John Pilkington <J.Pilk@tesco.net>
recognise the tuner - a PCTV 290e dvb-t/t2 usb device - so I'm running an earlier kernel with

You might need to download a dedicated firmware for your dvb device.
You can have a look on the kernel-doc package, there is a perl script for this. (get_dvb_firmware IIRC).
Of course having the name of the driver you are using for your device would help (lsmod output).

Nicolas (kwizart)