Black&White S-Video output :(

Question:
Black&White S-Video output :(
I have NW8440 with ATI FireGL video card and when I try to connect it to TV (Daewoo 72cm CRT) via S-Video I get b&w picture
I use the cables that worked well with my desktop computers with x550, x800 and geforce4 video cards.
I haven't been able to find PAL/NTSC mode in catalyst CC
Has anyone been able to solve the problem? And how.
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