Robin Hoods Playground

im down range in afghanistan and my roomate has a ps3.
when he starts it up it goes from green to yellow then to red. what does this mean?
i have not had to tinker with them yet.

and who has a "how to" teardown a ps3 pdf?

i used a video guide on you tube
the can have the same kind of trouble as 360 with the gpu/cpu losing connection from the mobo