Being as I have done laptop dis assembly for jack replacement for years
and years now, I have personally seen hundreds of examples of faulty
1-wire \ maxim chip issues.. Anyhow, a close friend came to me with a
dell latitude D620 that exhibited all the telltale signs of a bad 1-wire
chip; ie: it would recognize my PA-10 adapter (and consequently charge
AOK) however his would come up as unknown and not provide a charge.
SOOOOOO I embarked on the 1-wire id chip adventure as so many of you
also have. What I did hehe was post an ad on craigslist, looking for
free\cheap dead or alive PA-10\PA-12 adapters... And got literally
hundreds of hits. So yea, next step of course would be mass dis
assembly! When done with all of the adapters, I had 15 3pin chips, and
another 8 or 10 8pin chips. Now from what I've found, the 3pin units can
be wired up directly without any protective circuit and are quite
reliable, where as the 8pin packages are less so. Anyhow, I've been
making both adapter plugs with the 1-wire chip hardwired in them, that
amazingly work with just about *any* adapter... All the way up to 130w
HP units. And yes, they even display in the bios as 130w. Another neat
trick is hard wiring them into the Dxxx compatible docking stations.
Anyhow, I'll post some picks here in a day or two.