I’m trying to hook up my DVD player to my LG 43UK6500 thru Oknyo receiver. I get the picture but no sound. The receiver is hooked up to tv on hdmi3. I’m just using analog cables for the sound from dvd to the receiver (optical from receiver to tv). I’m sure I’m attaching the sound cables wrong. Could use some guidance! The tv works fine for Netflix and other apps. Just could use guidance on the dvd sound. Thanks!