I just bought my PS2 Slim (PAL-Euro), and my tv is also PAL (Toshiba XV55 1080, PAL) as I nlive i n Switzerland. I turned on my console and screen comes out b&w and so does when I put GOWar2... b&w. What to do?

Hi! I live in Switzerland and bought yesterday the PS2 (PAL) and plugged into my Toshiba XV55 1080 (PAL). I turned on the PS2 console and the screen is black and white. I then put in GoWar2 and remains its still b&w. The graphics are awesome and I am playing b&w. What to do? Thank you! Recommendations would be greatlz appreciated