"TV OUT" and "S-Video" are not necessarily the same thing.
TV-OUT (just a label) can be RF, composite, or SVid. RF would be like an antenna connector (an "F" connector) - threaded. Composite is usually a yellow RCA jack, and SVid is usually a four-pin "DIN" connector. None of them will work with any of the others ones without some sort of adapter / converter.
Three's component video too, but I've never heard of it ever being labeled TV OUT.
(The red and White RCA jacks are for audio)
Good Luck
Scott