OT: tibook keeps making clunk sound

[Terry Richards]

Daniel Gimpelevich wrote:

>I have one of these machines, and the fan only comes on during times of
>high heat (or when it THINKS the heat might be getting high -- oftentimes
>the heat is high and the fan doesn't come on). The fan is pretty loud, so
>if something's blocking it, you'd definitely have the problem you describe.
>  
>
no the fan is not where the sound is coming from.
i have taken the back off and there is nothing in the way of it.
there is a sound coming from the right fan grill but it is much softer 
than the one that bothers me.
the sound comes from under where my right hand rests on keyboard.

:-) ^2