changing built-in memory for 12 inch powerbook

You can, take a look at www.xlr8yourmac.com
They have a good forum about it with photo's and all!

 

If it's onboard memory (which I think it is), then it's probably part of the logic board, in which case, no, you can't.

edit: looks like I was wrong!

 

No, it's a dimm, a different one then the one you can replace yourself and it's soldered to the connector. You can also have it done. There where more threads about this.

Edit: looking in Mactracker, it also says it's onboard memory, I am doubting myself now... The iBooks all had a dimm that was soldered in its connector which could be replaced. But the PB 12"...

 

So you can wave good bye to any warranty then huh!

 

Yeah, do it after your warranty expires!! But there are also certified Apple repaircentres that do this for you.

 

yes, it voids the warranty, but it's still a standard so-dimm and can be done. i'd suggest this only for the people who already have good experience in soldering more delicate pieces than standard analog components... ths pcb technology requires a soldering iron that doesn't heat the whole board at once

 

If you're referring to the current 1.33GHz version, it uses memory chips soldered on to the logicboard not an actual SO-DIMM pics here. I'm not sure about the earlier revisions though.