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geekhack Community => Keyboards => Topic started by: Arch9 on Sat, 16 May 2020, 06:56:33

Title: All the key suddenly not working while jumping the switch
Post by: Arch9 on Sat, 16 May 2020, 06:56:33
Can somebody help me?

https://i.redd.it/zg0whh6r83z41.jpg

All the key is suddenly not working after i jumper the key, the smd rgb still working though and windows stll detecting the keyboard.

Here's the last satus before everything doesn't work https://imgur.com/5kDWozm
Title: Re: All the key suddenly not working while jumping the switch
Post by: suicidal_orange on Sat, 16 May 2020, 07:19:56
How did you work out where to solder the jumpers?  If you assumed the designer of this PCB was sane and sensible so the columns would be logical you may well be wrong...

Looks to me like there was/is a break on the diode connection going across the bottom that's not been fixed, and you've soldered a jumper to each dead switch where usually you only need one where the break is to fix a column.
Title: Re: All the key suddenly not working while jumping the switch
Post by: nmur on Sat, 16 May 2020, 07:21:24
are those bare wire? or are they shielded?

there's a bunch of points near the arrow keys/nav keys that could short out
Title: Re: All the key suddenly not working while jumping the switch
Post by: Arch9 on Sat, 16 May 2020, 07:33:14
How did you work out where to solder the jumpers?  If you assumed the designer of this PCB was sane and sensible so the columns would be logical you may well be wrong...

Looks to me like there was/is a break on the diode connection going across the bottom that's not been fixed, and you've soldered a jumper to each dead switch where usually you only need one where the break is to fix a column.

I tried connecting the solder pads by the wire, just like on this video
list=WL&index=11&t=250s
I also tried to remove all the jumper, and none of the key is work sadly. This is my first time soldering and unsoldering a keyboard btw.

are those bare wire? or are they shielded?

there's a bunch of points near the arrow keys/nav keys that could short out

Those are bare wire, i also think that's the problem but after removing all the jumper everything still not working.
Title: Re: All the key suddenly not working while jumping the switch
Post by: suicidal_orange on Sat, 16 May 2020, 08:38:49
I can't believe the guy in the video is trying to clip something while pressing a switch on the other side rather than just shorting to the other pin - no wonder he's struggling!

Those are bare wire

Oh dear.  nmur is probably right and you shorted something above the arrows right next to the controller chip.  You need a new PCB :(
Title: Re: All the key suddenly not working while jumping the switch
Post by: Arch9 on Sat, 16 May 2020, 08:42:46
I can't believe the guy in the video is trying to clip something while pressing a switch on the other side rather than just shorting to the other pin - no wonder he's struggling!

Those are bare wire

Oh dear.  nmur is probably right and you shorted something above the arrows right next to the controller chip.  You need a new PCB :(

Oh damn, rip I guess
Thanks for the help