When we bought the HDR we only had one cable and a loop through. We now have two cables but the machine seems to be still only working with one. I am sure probably someone has asked this before, perhaps someone could let know of a thread with the answer to this problem. I couldn't find it.

A factory reset will recognise the second cable and restore full twin tuner facilities. You will lose recording reservations but not recordings.

thanks, I've just done that and it came up dual cable, so I think it will work properly now. Thank you very much for your help.