I am trying to connect an old LG flat screen tv I have to an even older stereo I have with no luck. The D/A converter I have does not support 5.1 and I know this can be an issue. I have read that if my D/A does not support 5.1 then to change the optical out settings of my source device to PCM. I looked into the audio settings on my tv and my model does not give me the ability to change the digital audio output from BTS to PCM or anything else. I have read that LG support claims that the tv will output PCM automatically in the instance whatever channel you are watching or whatever device you are sourcing is also outputting PCM. I only use the tv with a ps4 that I plug in through HDMI to stream video through various apps so I changed the audio output of the ps4 to PCM and still no audio out of my stereo. I have the ps4 slim so I do not have an audio out on the console. The tv is an LG42LD450-UA. Probably from 2009 or 2010. I am thinking I need to return my D/A converter and get one that supports 5.1 audio but I am concerned that this will also not work. If anyone can give me some confirmation I could use the help.