Originally Posted by R0CK632
I Have optimum cable (Cablevision) I have the cable box going into the Sat/Cable in of receiver via HDMI and from the Out of the Receiver going to the HDMI Arc 3 port of the 1 connect box. I tried using optical as well and same issue.
Your Cable Box is outputting it's sound to your receiver so you would use that to control Dolby, etc. Your TV isn't getting any sound. We have the same setup, PCM or DTS Neo 2.5 are my only options because the TV is not handling the sound. My receiver is. Look at your receiver, I would bet it is on Dolby unless you have to manually change it which is the case sometimes.
LG OLED 65C7P, Denon AVR-X7200WA, Apple TV, Oppo UDP-203, PS4, Xbox One
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