Laptop come with Dead and water damage.
Clean the PCB and try to Power On ,but some time On
checked 19v from supply 19v is OK , Checked +5V_ALW and +3V_ALW,the two voltages missing.
Changed Step Down Voltage Controller PU100(TPS51225C) from another spare board and start to get +5V_ALW and +3V_ALW and laptop powerd On
and found one more problem;auto on after shutdown laptop,checked POWER_SW line ,POWER_SW line is ok,checked all power on related signals and found missing on +3.3V_M/+3.3V_SUS source,and refixed U36(PS22966DPUR)
all issues solved :o
Clean the PCB and try to Power On ,but some time On
checked 19v from supply 19v is OK , Checked +5V_ALW and +3V_ALW,the two voltages missing.
Changed Step Down Voltage Controller PU100(TPS51225C) from another spare board and start to get +5V_ALW and +3V_ALW and laptop powerd On
and found one more problem;auto on after shutdown laptop,checked POWER_SW line ,POWER_SW line is ok,checked all power on related signals and found missing on +3.3V_M/+3.3V_SUS source,and refixed U36(PS22966DPUR)
all issues solved :o