I will try to explain how to repair an AC power adaptor, in this case, an ibook G4 adaptor. The problem here was the cable which was damaged. Please keep in mind the adaptors are not all the same!!
What I did was:
1- Cut the cable, strip both ends and strip a little piece at ~2cm of the end (picture 1)
2- Solder both ends and solder the little piece with another electric cable. I used a PSU cable. (picture 2)
3- Pray… It worked for me (picture 3)
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