Need to change chip on Powerbook G4

[Bruxollini]

My brother's got a Powerbook G4. It stopped working and he took it to his friend who asked him to buy a new HDD. He did so, and now after installing the new HDD, my brother was told to get a chip - numbered M3062MF86P, that connects the processor to the HDD. I'm trying to find it for him, but couldn't so far. Anyone knows how to get that thing?
Thanks!

 

[TEG]

I don't believe that you can change any chips on the PB. However, you can upgrade the processor using one of several services.

TEG