Check audio menu of the cable box and input set up menu of the receiver.
Some early surround receivers with HDMI did not accept audio via HDMI. Check the owners manual. You may need to add an optical cable from the cable box to the receiver.
Check audio menu of the cable box and input set up menu of the receiver.
Some early surround receivers with HDMI did not accept audio via HDMI. Check the owners manual. You may need to add an optical cable from the cable box to the receiver.