nokia 7600 not charging

[losamaros]

I got a nokia 7600 used off a friend and I unblocked it with a code and now it wont charge, it apparently was working ok before.

The batteries is fine as is charger both been tested on different phones and I have tried lots of different chargers

could unblocking it do this?
or is it something else, please help

[loser58]

maybe its just seems like its not chargering like a software faulty,. check it run the batt/ down till its dead then put it on charge and leave it for 3hrs...see the out come