Past couple of days I haven't been able to use the timer recording functions via the guide+ on a Panasonic dmr-bw780. It is connected to the tv via HDMI, have had the set up for a few months, and have made sure everything is securely plugged in. When you find the programme you want to record and select it for the timer, for a second the confirmation screen appears then the screen goes blue and it switches back to the channel you were watching before selecting the guide. Have tried it via scart and the same thing happens, thought it was due to bad weather but winds have died down and my Humax pvr works fine upstairs. Could it be the tv? Am I missing something really basic here?