In fact, lately I got a lot of mobile phone chargers damaged, initially only my friends who ask for help repair a damaged charger, but then they tell each other, eventually a lot of friend swho ask for my service service: P
Well, what components are often damage in this HP charger? If I found many of his fuse-resistor components are damaged. This component is the location of the cable going into the diode AC power supply, and also found a dead diode on the output voltage.