I have an ibook g3 with mac 10.4.11 on it, and then screen is starting to go dimmer on me. I realize its probably a part, but before I go replacing anything I want to try adjusting it and see if that helps any.

Have you tried the brightness buttons on the keyboard? There are more brightness settings under "System Preferences" -> "Displays"

How can I adjust the screen backlight on my ibook?
How can I adjust the screen backlight on my ibook?

I have an ibook g3 with mac 10.4.11 on it, and then screen is starting to go dimmer on me. I realize its probably a part, but before I go replacing anything I want to try adjusting it and see if that helps any.

Have you tried the brightness buttons on the keyboard? There are more brightness settings under “System Preferences” -> “Displays”