ur connection shd be
yellow cable from stb box to tv yellow female jack
red and white cable from stb to avr red and white female(aux I think)...select aux in avr via remote or by button...
select videio 1/2 in tv
open the hdmi cable from avr to tv...
shd work like a charm
or yellow,red,white set from stb to avr in....and again yellow only from avr out to tv in....select video 1/2/3 in avr and also in tv
or
all cable to tv afrom stb and red and white audio out from tv into aux of avr..that will also work..select no tv speakers by tv remote and aux by avr remote
btw upgrade to a hd stb tatasky for enjoying fully ur avr..
oh pls reply whther the connexons worked or not