I don't have S-VIDEO on neither VCR or TV, that is why I use the scart.
Now, I dont know quite if I misunderstand you or something, but anyway; the cable I use looks like this:

"A S-VIDEO and two audio-plugs leads down to a scart. I connect the S-Video to my computer, and the scart to my TV/VCR"

I cant detect the TV.
However I will try it out some more tomorrow, and post my progress