Ok, so I have an old PSX that refused to play games... the disc would spin slowly once or twice and stop. Obviously the laser wasn't recognizing it as a game.
So I took it apart last night *the laser assembly that is)... I took it apart about as far as I could get it, then, with the assembly in my hand, I tested a game. It worked!
I put it all back together, and now everything works perfectly.
Thinking about it, I DID move a "seemingly" non-functional screw... there was this tiny gold one placed on the orange band connecting the laser assembly to the actual board. I just sorta twisted it a couple turns before realizing it wasnt even hooked up to anything. (maybe this is the BIAS screw I've heard mentioned? I didn't see any markings on it naming it thus, only "N" on both sides of it)
My question is... what did I do, if anything? I'm happy it's playing again, but I am interested in this sort of thing, and would like to know both for curiosity, and in case it should start messing up again.