thank you, i will try that.

it is little higher. ...

thanks. resistence is between 54-60 ohms, black on ground red on main power rail, vise versa show nothing.

hi, im newbee to all of this, but learning. i have problem to locate failed component on motherboard. laptop suddenly stop working, no signs of life at all. try measuring power rails, but as soon i connected before measured multiple power adapters (all of them gave me 19V and working on another laptops), and start measuring first spot on mb (black on ground and red on red wire on mb power connector) it showing power fluctuacting from 0.40V to 0.60V instead 19V. from one ac adapter heard clicking sound, from another ac adapter standby led start blinking. any help would be greatly appreciated. ...