I got a free Mac PowerBook G4 laptop computer on Craigslist from a lady who told me that she thought the logic board was bad because the computer wouldn't wake up from sleep mode. The computer didn't come with an AC adapter so couldn't try it out. I came to iFixit looking for a compatible adapter and I found one. I bought one and it arrived quickly.
The "repair" was simple. All I had to do was plug one end of the adapter into the computer and the other end into a wall outlet.
I recommend iFixit to anyone who is looking for a replacement AC adapter for their Mac.