Hi guys gooday.I got a Dell Labtop that came to me with loud fan spin and won't power on.When I connect to dc Power supply it would just start drawing about 500 milliamps for 3 seconds then stop.I opened it up and there was a burnt Mosfet as in the picture below.I also provided a picure of the mosfet i replaced on the board.I think it's for CPU VCORE not certain. There is no schematic available for this model.So i luckily had a brand new N channel mosfet 30V i replaced the Mosfet.Then when i press power button still will try to start then will shut off.With 3 seconds fan spin too.So i flashed the bios and then I noticed almost all voltages on the rails shows up for 3 seconds as soon as i press power button the 3v and 5v plus memory rail and also cpu vcore shows up for 3 seconds then off.It draws about 750 milliamps now then still shuts off.Can you guys confirm if maybe when the mosfet died it killed CPU? The Charging LED glows constantly when i plug in the charger. When i press the power button and it tries to start i notice the Charger LED goes off then when it shuts off then the LED comes back on.
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