I hope one of you experts can help a novice and very new member! I have Sky+ installed on Ext 3 on a Tosh 36ZP18P via scart. There is an Optical cable connecting the two. My problem is when I try to change channels on the Sky+, the TV defaults back to channel 6(where Sky is tuned into) instead of picking the signal up from the Ext. This means that I don't get the benefit of the Dolby Digital sound on movies.In fact the sound on channel 6 is actually mono.I have manually tuned channel 6 to another channel but as soon as I press Sky on my remote, it defaults back to channel 6. Any suggestions? Thanks in advance. Tosh 36ZP18P, LG DVD, Sky+, Panasonic VCR, PS2, Philips video sender.