Really doubt it's the cable. It's pretty hard to seriously muck up spelling so simple. I don't have a single S-vid or component cable set that's OEM and I've never had a single issue. We're taking 2 wires in a plastic sheath.
I'd suggest wiring S-vid up to the SNS-101 properly and trying again. S-vid out of the 001 units is pretty "meh" at best, based on my experience.