Acer a715-42g: pin to short to turn on.

[agent0bean]

Hello, I am trobleshooting a laptop and I need to find the KB pins to short to power on the laptop - power button not currently working.

[mon2]

OMG - going through a similar pain on a review of a high end Asus laptop. These keyboards are just crap!

For your case, review the pin #1 on the keyboard. This has the '#' symbol which denotes this to be an active LOW signal. When this line is brought to logic low (ground it) then the button is considered to be pressed. If open, the pin will be a logic '1' = high.

So for testing, take your meter probe and short pins 1 & 2 together on this keyboard connector and the laptop should power ON. Repeat and it should power OFF.

The fault is with the carbon based dome switch used for the power ON/OFF button. Just bad design and wears out. The work around is to consider to replace ($$) or use an external small pushbutton switch where 1 pin is to pin # 1 on this keyboard connector; other pin on the extra switch to ground.

[agent0bean]

OMG - going through a similar pain on a review of a high end Asus laptop. These keyboards are just crap!

For your case, review the pin #1 on the keyboard. This has the '#' symbol which denotes this to be an active LOW signal. When this line is brought to logic low (ground it) then the button is considered to be pressed. If open, the pin will be a logic '1' = high.

So for testing, take your meter probe and short pins 1 & 2 together on this keyboard connector and the laptop should power ON. Repeat and it should power OFF.

The fault is with the carbon based dome switch used for the power ON/OFF button. Just bad design and wears out. The work around is to consider to replace ($$) or use an external small pushbutton switch where 1 pin is to pin # 1 on this keyboard connector; other pin on the extra switch to ground.

Thanks... This did the trick... Need to replace the keyboard then...

[mcplslg123]

For acer,its always pin 1-2 as power button.