Non Emulator help needed.

Hello, I recently found this site and was Happy as hell, So I downloaded a few PSX 1 games and burned them using Imgburn on 3x speed. Everything went fine. But when I tried to load the game with my psx1 chipped console everything is fine except that Im getting a Black Screen after the ps3 logo appears, The sound works great but the screen is just black. Do anyone know what can be wrong? Am I doing anything wrong? or are some games simply broken? Im really in need of help. /// Yours Megman

Several possibilities;
1. the game could either be NTSC or PAL, be sure to know what your modded console is
2. PSX uses VCD not DVD so be sure on which CD you use to burn