Acer aspire power on!!!

[MIDOX]

Hi all
I want help please
I have acer laptop motherboard
Model Name :Q5WV1/Q5WS1 LA-7912P.

I want to turn on the laptop without power button

U find 3v in pin number 1 and i want what is short pins make laptop on

[brew99]

Re: Acer aspire power on!!!

Usually 3.3V to Grd to turn on. I don't have the schematic for your device, so can't say exact pin#. There might also be a couple of exposed pads/jumper near the power button connector on the motherboard that you can jumper

[mcplslg123]

Re: Acer aspire power on!!!

Pin#7 is pwrbtn and pin8 is gnd. So shorting between these two pins should turn the mb on if everything else is ok.

[MIDOX]

Re: Acer aspire power on!!!

i try to short pin 1 with 2 some times turn on and some times no

[on/off]

Re: Acer aspire power on!!!

• When use search, easy to find schematic on badcaps.net forum.
  https://www.badcaps.net/forum/showpo...34&postcount=1
  Want to repair SMD devices without schematic, till you know pin out kbc in your head (expert), then try check contiunity which pin goes to power conn.
  
• pin 1 3valw
• pin 7 on/offbtn#
• pin 8 gnd
  So you want to make shorted +3valw power rail with LID, lucky you no hurt to mobo. follow suggestion post#3
• Usually I made an on/off power button from scrap board (touchpad click L/R---or ex power button) and connect to SW1 for help when I'm trouble shoot motherboard. Twizzer NO

[on/off]

Re: Acer aspire power on!!!

[/QUOTE]Maybe your problem on LID IC, check that IC on your power button's board.

IC package SOT-23-3

Part | Marking Code | Vendor

PT3661-BB = 661 Prolific
EM-6781-T3 ??? AKM
AH180N = K9 Diodes
APX9131 = X31X Anpec
APX9132 = X32X Anpec
MH248BESO = 248x MST/magnesensor
OCH1691WAD = 251x ???
AH9249NTR-G1 = GJ9 Diodes or BCD

[MIDOX]

Re: Acer aspire power on!!!

thx for helping problem resolved

thx badcaps legend <3