I have a PS2 version 7/8 with a mod chip. It has been hit and miss for about a year or so. Sometimes it will load originals and backups and sometimes they won't load at all. I've cleaned the laser, blown into the tray, let it cool off, done a hard reset, and still it does what it wants to do. I don't understand it. I keep getting that cube adrift and the red smoke stuff with the obnoxious drone.:doh:
My guess is that it is either the laser or the PS2 motherboard itself. Is this a common problem? How should I narrow down the possibilities?