It is an LCD TV. I've tried it on three TVs, and it only displays right on one. It is an SCPH-75001, and I don't believe it is chipped. I know that it has some incompatibilities, but even when I run games that are supposed to run perfectly, they have a problem. Every single game I've tried. They either hang at the Playstation logo, have half the screen playing the game and the other half stuck on the logo, or have the normal gameplay but with the Playstation logo stuck in the background.
It is strictly a PS1 problem. No PS2 games have this problem. I might just get an S-Video cable. I played PS1 and PS2 games in composite for over a decade, and to be honest, I didn't like the look of when I hooked up a PS1 game to a TV that worked. The textures are jaggy, whereas with composite and I'm assuming S-Video they are smooth. I may just switch the cables when I want to play a PS1 game.