i have an LCD TV and i used to connect my toshiba laptop with it thru an s-video cable, i.e., both sides, there is an s-video port and it used to work perfectly. but now, that cable got ruined and i got a new one with s-video port on one side and RCA plug on the other. now when i try to connect the same laptop to my tv, only black and white picture comes up if i connect just the yellow plug to the tv and if i connect the other 2 (red and white) connectors also, the picture vanishes completely. wt kind of issue is this. Please help.