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.
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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 ($$) or use an external small pushbutton switch where 1 pin is to pin # 1 on this keyboard connector; other pin on the extra switch to ground.
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Thanks... This did the trick... Need to replace the keyboard then...OMG - going through a similar pain on a review of a high end Asus laptop. These keyboards are just crap!
For your case, review the pin #1 on the keyboard. This has the '#' symbol which denotes this to be an active LOW signal. When this line is brought to logic low (ground it) then the button is considered to be pressed. If open, the pin will be a logic '1' = high.
So for testing, take your meter probe and short pins 1 & 2 together on this keyboard connector and the laptop should power ON. Repeat and it should power OFF.
The fault is with the carbon based dome switch used for the power ON/OFF button. Just bad design and wears out. The work around is to consider to replace ($$) 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.
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For acer,its always pin 1-2 as power button.Comment
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Hello everyone,
I'm trying to repair my old Acer Nitro 5 (AN517-54-55T5). I've already bought a new laptop, so this is more of a learning project. For the experience, with no high expectations of success.
Well, my decice specs are the following:
Model: Acer Nitro 5 AN517-54-55T5
CPU: Intel Core i5-11400H
GPU: NVIDIA GeForce GTX 1650
Motherboard: GH51G LA-L181P Rev:1c
The symptom:
When pressing the power button, the power LED lights up for about 5 seconds and then turns off. Initially, the issue was intermittent: sometimes...05-26-2025, 10:49 AM -
Laptop data:
NTB Acer An517-51 FHD
i7-9750H
16GB replaced with RAM Crucial Ballistix SODIMM DDR4-3200 32GB K2 SW
1TB SSD
RTX2060
Bon soir dear online techies, enthusiasts, modest helpers and whomever I might have forgotten!
Search gave me no hits so this is my first post.
My Acer 5 Nitro mainboard had a short circuit when I tried to plugin a USB device. Some smoke rose from the port and it became super hot a that point of entry/exit. Warranty was of about a month.
Since I am on a low budget I cannot afford to buy... -
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