You will have to have digital optical output on the LG and digital optical input on the Pioneer for the connection to even work. On top of that, the LCD has to be able to output surround sound, which may not be likely. 2.0 or 2.1 may be possible however. Without an actual model number of the LG, it's hard to tell
I am trying to hook up surround sound to my new LG lcd from my older Pioneer vsx-901. Is it possible? So far I have not been able to get a signal from the TV to the tuner.