Need to connect my Okyo receiver to cable box

[cubanasoy58]

I have an Okyo Receiver and if I connect it to the xfinity cable box I can hear the sound thru the receiver but I can't see the picture on the tv

 

[hang-the-9]

What model or receiver exactly. Do you mean Onkyo? How is everything connected? You have the TV set to the correct inputs for the video connections correct?