Well, I gave it a shot! Long story short no luck. Even if it worked, I'm not sure I would recommend it, that tear down was a little brutal. The keyboard comes off easy enough but since the RAM is on the backside of the motherboard, it requires removing the whole logic board (which means...
So. I also have a PowerBook G4 with a dead ram slot, the lower one quit working on mine. I dug into this a little bit awhile back and found that this was a super common problem. Apple had a replacement program in place to swap out the logic boards.
As I recall, I found a bunch of folks...