Hi All,
Firstly I confirm that I have tried Paul Finlay's suggestion on turning the Power Setting on standby to off the only effect this has had is for the time to be permanently displayed on the PVR screen whereas before this was not the case.
Graham - no firmware mods are available to me as the dvb function is unavailable in the TV's present configuration with the humax pvr. As we live in France I don't think I can get this anyway.
There is no visible sign of a cec hdmi control only a link to allow an hdmi interface with other Panasonic equipment that uses hdmi links - this I have now turned to off - no change.
REPASSAC - the tv remote does have an av/tv button and switching between the two gives a snowy screen or a picture.
Thanks