Hi, I’m actually having quite a similar issue, with a similar laptop (lenovo). Basically, the power adapter end is old, and has worn out, which seems to be a common experience. It would charge only when in a very specific configuration, turning my laptop into a desktop. Anyways, I cutoff the end, and it appears the issue is with the blue wire (see picture).
[image|2163637]
I’m not sure what the three wires correspond to, but in any case, if I could replace this component I think I could splice it back onto the charger. I don’t know what the name of it is, or where to find it. I could probably fix it myself if needed, but I would imagine it is a cheap piece and not worth the hassle.
If appropriate I’d be willing to try and write up a guide/experience report for this (if successful) since it really is a common issue.
thanks.