[P1] ibook wont sleep for long

[TimeFreezeG3 at aol.com]

Its a rev a bluberry, i think the last owner uprgrades from 32mb ram to160mb.
There is no latch.....Ya gotta pry it open ;) like a clam.
screw? what screw?..it seems as if the case is a bit flimsy. so it could just 
barely press a key...but even sometimes. I will have it on my desk flat, and 
shut it...turn the light off. wait a bit, its different every time but i see 
the screen light up through the lexan?