I have been have problems with my DV4000 charging, it would charge only if I connected a external monitor to it, it was using that circuit as it earth source, you only had to connect it with no power.
It turned out to be the AC adpter socket, there is a tiny micro switch inside the socket which is opened when the adpter is plugged in, in my case the switch was damaged and wasn't switching as it is surposed to.
The laptop was taken apart and the socket unsoldered and replaced with a new one, approx £15.
hope this is useful to you all, thanks also to Colin from : http://www.truestate.com/hprepair/ a really helpful genuine Guy.
Regards Bob
It turned out to be the AC adpter socket, there is a tiny micro switch inside the socket which is opened when the adpter is plugged in, in my case the switch was damaged and wasn't switching as it is surposed to.
The laptop was taken apart and the socket unsoldered and replaced with a new one, approx £15.
hope this is useful to you all, thanks also to Colin from : http://www.truestate.com/hprepair/ a really helpful genuine Guy.
Regards Bob