Did you connect you component cable correctly?
You can get B/W picture if you mismatch PbPr inputs.
I recently purchased the Samsung LEd and the picture looks great, but I hooked up my nitendo Wii yesterday and it is black and white with fuzzy lines running everywhere. I then tried to hook up DVD player and clarity of the picture looks great, but the color is pretty much in black and white. Has anyone else experienced these problems or is it a problem with my television.