What I'm getting from your post, is that you're missing some channels when you connect to the Slingbox.
If so, this might be a problem with the TV service, an encrypted channel for example.
What I would recommend, is to check the following link
Thank you for your reply!
I think your right! I found an old vcr and plugged it into my slingbox and it is showing all my channels. So it seems that the encryption was the problem. However, the picture quality with the vcr is frankly lousy. So I need to figure out how to fix the encryption problem with the cable box. I tried to change the settings but could not follow those directions. Could it because I have a slingbox av and not a pro-hd (like in the directions)?
Under my "setup assistant" have a menu on the left with a heading of "edit settings" I have "setup your slingbox," "configure video sources," "picture & audio settings," "setup internet viewing," and "software update." I do not have a area called "connection." Also, in the area where you do select your video sources, there is no option for "cable (without a cable box)." And therefore, I am unable to select analog. Please help! thank you!