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geekhack Community => Keyboards => Topic started by: Lucifuga on Mon, 16 October 2017, 21:27:16

Title: Used laptop suffering from a plethora of keyboard issues
Post by: Lucifuga on Mon, 16 October 2017, 21:27:16: Hello,

I picked up a used Lenovo G50-45 laptop with some major keyboard issues and was hoping that by detailing them here someone might have an idea as to what is wrong with it.

(http://i.cubeupload.com/L0YvKn.png)

Symptoms:
Some keys don't work (no input is read) - "a"
Some keys have 2 inputs binded to them - "b" = "vb"
Using the Program "SharpKeys" I see at times "E0_3F10" is being inputted despite it having no assigned key - this comes and goes but afterwards "q" is spammed as if it is being held down
Lshift/Rshift differ in functionality per key but most combinations result in no input being read

ABC's
vbcdefgik;mnmnoprstvbwxyz

Uppercase
Lshift - EGIOPRTWY
Rshift - VBCEGIMNMNOPRVBWXZ
Capslock - VBCDEFGIKMNMNOPRSTVBWXYZ

Happy to provide any other details
Thanks for your time
Title: Re: Used laptop suffering from a plethora of keyboard issues
Post by: tp4tissue on Mon, 16 October 2017, 21:49:08: they sell replacement parts, including entire keyboard assemblies..

Just buy one, and replace it, it's cheap only $20-30

There's no point in figuring out what's wrong..
Title: Re: Used laptop suffering from a plethora of keyboard issues
Post by: SamirD on Fri, 20 October 2017, 00:52:52: Agreed. Just replace the part. Sounds like a liquid was spilled into the existing keyboard.
Title: Re: Used laptop suffering from a plethora of keyboard issues
Post by: Findecanor on Fri, 20 October 2017, 01:41:47: I would think that low-profile rubber domes wear out faster than others.

I have worn out keys on a Lenovo ThinkPad at work that I had been using for less than a year. I got a replacement keyboard for it the next day, but that was part of warranty or something
Title: Re: Used laptop suffering from a plethora of keyboard issues
Post by: rich1051414 on Fri, 20 October 2017, 01:42:36: If you haven't checked yet, make sure the ribbon cable connecting the keyboard to the motherboard isn't misaligned.