...all makes/models so we know 100% what you are working with.
Truth be told, 99% of HDTVs won't work well in this regard as an AV 'hub'. The addition of HDMI is both a curse and a blessing. This is why even finding a lower end traditional AV receiver would be preferable for proper surround sound.
Short of running through all the external audio settings on the HDTV and finding one that works for proper surround (sort of like finding a unicorn), you need to set up a system using one of the following methods:
SkyPLus box (HDMI out) --> (HDMI in) AV Receiver
Blu Ray player (HDMI out) __> (HDMI in) AV Receiver
AV Receiver (HDMI out) --> (HDMI in) HDTV
Sky Plus (HDMI out) --> (HDMI in) HDTV
"" (digital optical out) --> (Digital optical in) AV receiver
Blu Ray player (HDMI out) --> (HDMI in) HDTV
"" "" (digital optical out) --> (digital optical in) AV receiver
hi, i have pretty much the sme problem, this is what i have, i have a samsung 50" smart tv with sky plus connected to tv via hdmi then the surround sound connected via hdmi and optical , on my tv i have anynet + device which picks up the sky box but not the blueray and before i was able to turn surround on aswell as tv and have the sound going thru the surround for sky and all was fine but last week it has stopped for some reason, i have reset everything changed cables tried to get anynet to pick up blueray but it still doesnt want to work and is very fustrating when the surround is on blueray it works fine but when it goes bk to tv via sky we have surround through the tv and we used to be able to control the volume with sky remote ( going through the surround) but not now all sound is through the tv so when we turn it up it just turns up the sound on the tv please help thanks in advance