Hi, after changing power adapter for universal, laptop works good for a couple of whiles. After maybe 1 hour, he turns off and died.
Now he takes 0.01 ampers from service power supply. I dont have schematic, so its a little bit harder. Through first mosfet i messure 0,8V and it's the only present voltage on board except input 19V. Same value is on DC 5V and 3V mosfet's.
When I put 19V through this first mosfet, nothing is change except value of voltage in same points. I replace this mosfet but still the same.
I want to change DC 5V/3V transformer (uP1661P) but i afraid it could change nothing.

Thanks in advance for any sugestions.

which resistance relative to ground after the second mosfet?

Resistance to ground after second mosfet was OL. That's why i didn't replace him. After replace him laptop works good. First mosfet was good. There was shortcut on GATE only when i plug in power adapter. Resistance on gates was normal. My mistake, but meybe someone will get same problem.
Greetings!