[image|1537151]
[image|1537152]
Ok, her’s the problem. The laptop Asus S551LN doesn’t power up, completely dead. The adapter gives 19 volts as it should. Of course I have tried to remove all the connected hardware and start without any luck. I have tried holding the power button as well.
I don’t seem to find any schematics on this except some pictures of the motherboard. So I measured the continuity at the power on switch. As drawn in the image I get continuity on adjacent legs and I get continuity on opposite legs when switch is pressed. (I assume the switch is working).
[image|1537137]
There is this 3 leg mosfet (i think so) next to the powerjack. How to check if it is functioning as it should?
[image|1537135]
I couldn’t identify any power IC or diode that could be a reason for this.
Any help here?