Black screen on PS3 Installation

I got a black screen just when i try to install SUSE 11 (start otheros for first time). I have the same problem with 10.3 which I had installed in the past with firmware older than 2.01. Now I got 2.50 and I can only istall YDL 5.0 or 6.0 but not SUSE 10.3 or 11. The installation looks like it works when I press ENTER but I cann’t see anything on screen (TFT LG 19" monitor). Any ideas ??? pls