If you're making a portable you probably need something to watch it on. (Unless you want to guess what's happening in the game, but I wouldn't advise that) Anyway, this forum is your "Hacking a pocket TV/screen" one-stop solution. Share your experiences and knowledge here.
Somewhere in the middle of the screen, on the left side, the PSone screen gets a little bit warm. Also, the screen itself gets a bit warm. Is this normal for it to get warm like that?
That's normal. I thought it was really hot. it gets that way after playing for a while. No machine is 100% efficient in converting energy. some is lost to heat energy.