hi there ! SO glad to be registered on this nice forum!! I hope I got the category right!
So I have this mono I've pulled from the laptop ASpire 3500 that is dead. I've tracked down the voltage from the PSU jack til the battery terminals and voltages seems to be right. then I've kept testing for shorts all around the board (MOSFETs, regulators, diodes) and I found two MOSFET near the cpu socket who were giving short so I removed them and they tested good. the pads where they were soldered still, giving short. also other components such as diodes on the other side of the board given short. then I tried to remove the CPU and without the CPU all the shorted pads and components which tested shorted in circuit tested OK. changed CPU same result. CPU in, shorts. CPU out, OK. the mobo did not start without CPU anyway.
I will PosT some picture later on, my question now is quite simple, I do not define myself as a total newbie, from what I know there shouldn't be a short like this. is that normal that stuff go "short" when the CPU is in the socket? I have tested another mono and it wasn't like this.
my supposition about what is faulty is that there is something wrong with the north bridge. it seems it has some heat mark beneath the heatsink.
thanks for any of your replies!!