ipod Classic & AV Composite Cable

I've had a Belkin AV Composite cable hooked to my ipod 5th generation for about two months now. It worked fine for what I use it for, couple podcasts here and there in the bedroom. Now, I only get audio and no video. The cable is like brand new - only unhooked it to test on other TVs and the same thing. I have a cheapo composite cord and tested it and got both audio and video, but when I changed to a different video, I lost the video again. That cheap cord never worked except for the time I tested to see whether it was my ipod, TV or Belkin cable - go figure. I'm trying to see if it's my ipod or the cable. I'm assuming it's the video cord on the cable itself. Is it because it's not an exclusive apple cable? I bought it at best buy and it's over 60 days to return so I was going to just go ahead and get the apple brand, but I don't want to be stuck w/ two composite cables that won't work.

I've updated the software on the ipod to the current, just the other day. Could that be it? Any troubleshooting advice would be greatly appreciated. It was so convenient when it did work and the picture on the TV was surprisingly good! Thanks!