yes i get the sky picture when its in standby
yes AV2 is displayed with its switched on
cheers
A few things need double checking here, to avoid a possible mis-diagnosis.
The problem being that scarts carry both composite and RGB signals in parallel, and so according to settings in the DVDR and the way the TV does its AV switching the system behaviour can indicate one problem when it's another.
You get a signal through when the EZ48 is off ... which suggests that an RGB signal is being supplied by sky, is being successfully delivered by scart to the EZ48, and is successfully passed on to the TV... The important thing to confirm is that it is RGB that reaches the TV and not Composite.
If you are sure of that then, it confirms that the source type is correct and is being successfully delivered by fully wired scarts.
Which leaves only the EZ48 as the possible cause.... and which would indicate that either the input settings of the EZ48 are incorrect, the unit has a status glitch [ reset-able ] or the unit has a more significant internal fault [ returnable.]
So confirm RGB is what is getting through when unit is off.
Recheck that the TV scart of sky is being used as the source if not and that RGB is correctly selected on the TV.
Recheck the AV2 input setting of the EZ48 [ Functions / to others / setup / connections ].... Set to RGB.
If still no results try a power reset. [10 minute Mains disconnection ]
If still no results reset unit back to factory settings ... then recheck AV2 input settings.
If still no results - return unit.