Laptop Model : Dell 3579
Board Number : LA-F611P
Fault : On & Off Problem
Repair Process :
After disassembling the Laptop and plugging
in the adapter, it was able to power on. After a while, it automatically
powered off and shut down.
When
pressing the switch again, there was no response.The test trigger switch is
0.4v, which is abnormal. power_sw#_MB, chase +RTC_CELL, this voltage is
used as a pull-up, test the RE41 resistor 100k, it is normal.
One end is 3.3v, the other end is 0.4v, it
is connected to CE33. The other one is POWER_TB_DOCK#, first remove the
capacitor, the voltage It's back to normal, and the machine can be switched on
and off normally.
Happy Repairing !!
No comments:
Post a Comment