Sorry that I've not replied earlier - been on holiday
. Thanks for the suggestions but I'm not really any further forward. My set up is as follows:
Video - 2 Scarts, 1 connected to Digital box, the other free
Digital Box - 2 Scarts, 1 connected to Video, the other to TV
DVD surround sound - 1 Scart connected to TV
TV - 3 Scarts, 1 connected to Digital Box, 1 to DVD and the other is free.
There are no audio ouputs from the digital box, no optical outputs either. If I get a splitter and run the Scarts from the DVD and the Digital Box to it and then on to the TV will this sort out the problem?