Hello guys, today i bring to forum an Fujitsu Lifebook E546 that won't power up.
Now the issues are:
-Only with charger, the board only try to power pressing power button, presenting only a flash blink, but don't even stay up for a second.
I try to follow power rail and when i face with the 3th and 4th mosfet (RS1E200)
On gate i found 0.8V if my mind won't fail.
So, after that i have allways that valour and when i arrive at 5th MOSFET on Gate i have another 19V...
Now...
When i plug the battery to board, laptop turn ON.
But... if i plug the charger, the first MOSFET of power circuit, starts to make some smoke and gets very hot.
Seems the circuit get a short.
So resuming:
-Only with charger - NO POWER ON LAPTOP.
-Only battery - POWER ON if battery charged.
-With charger and battery - NO POWER / POWER RAIL GETS HOT / 1st MOSFET HOT AND SMOKE / BATTERY WON'T CHARGE PROPERLY.
Should i remove MOSFET ? and bridge a wire ?
Thanks for all
Now the issues are:
-Only with charger, the board only try to power pressing power button, presenting only a flash blink, but don't even stay up for a second.
I try to follow power rail and when i face with the 3th and 4th mosfet (RS1E200)
On gate i found 0.8V if my mind won't fail.
So, after that i have allways that valour and when i arrive at 5th MOSFET on Gate i have another 19V...
Now...
When i plug the battery to board, laptop turn ON.
But... if i plug the charger, the first MOSFET of power circuit, starts to make some smoke and gets very hot.
Seems the circuit get a short.
So resuming:
-Only with charger - NO POWER ON LAPTOP.
-Only battery - POWER ON if battery charged.
-With charger and battery - NO POWER / POWER RAIL GETS HOT / 1st MOSFET HOT AND SMOKE / BATTERY WON'T CHARGE PROPERLY.
Should i remove MOSFET ? and bridge a wire ?
Thanks for all
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