Laptop Model: Acer E1-471G
Board Number: DAZQSAMB6E0
Fault : When connected to the power supply, the
current is 0.023, but there is no response when pressing the switch. The
standby current of this notebook is obviously high.
Maintenance Process:
Remove the motherboard and measure +3VPCU +5VPCU, both of which
are only a few points. VREG3 2.1V, VREG5 4.6V, VREG3 voltage is low.
When the power is connected, the standby current
becomes 0.002, which seems to have returned to the normal standby current. The
measured VREG3 3.3V is normal. Press the switch to power on, and the screen is turned on
normally. The repair is completed.
Happy Repairing !!
No comments:
Post a Comment