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geekhack Community => Keyboards => Topic started by: Sasuak on Sat, 07 December 2019, 07:14:12

Title: Help, after desolder and replace new switch
Post by: Sasuak on Sat, 07 December 2019, 07:14:12

My keyboard Corsair k63 Wireless.
After i replace new switch, when i press one key it will input one row.
Please help, whats wrong with this?

I already check my pcb board, its all clean without any flux or tin

Title: Re: Help, after desolder and replace new switch
Post by: suicidal_orange on Sat, 07 December 2019, 10:51:21

Did you trap the USB cable under a switch pin when you put the case back together?  That would do it.

Or maybe shorting a switch pin to an LED pad?

Title: Re: Help, after desolder and replace new switch
Post by: Sasuak on Sat, 07 December 2019, 11:39:25

Quote from: suicidal_orange on Sat, 07 December 2019, 10:51:21

Did you trap the USB cable under a switch pin when you put the case back together?  That would do it.

Or maybe shorting a switch pin to an LED pad?

its not even in the case, only pcb and plate.
what is led pad?

Title: Re: Help, after desolder and replace new switch
Post by: Steezus on Sat, 07 December 2019, 12:04:19

Quote from: Sasuak on Sat, 07 December 2019, 11:39:25

Quote from: suicidal_orange on Sat, 07 December 2019, 10:51:21

Did you trap the USB cable under a switch pin when you put the case back together?  That would do it.

Or maybe shorting a switch pin to an LED pad?

its not even in the case, only pcb and plate.
what is led pad?

(https://i.imgur.com/Grn77L1.png)

For each switch, you would have two holes for the pins, two holes for mounting if your PCB supports and you have PCB mounted switches, and two holes for the LED pins marked by the red circle.

Title: Re: Help, after desolder and replace new switch
Post by: Sup on Sat, 07 December 2019, 14:44:40

I think it also good if you show us your soldering.

Title: Re: Help, after desolder and replace new switch
Post by: Sasuak on Sun, 08 December 2019, 00:08:11

Quote from: Steezus on Sat, 07 December 2019, 12:04:19

Show Image

(https://i.imgur.com/Grn77L1.png)

For each switch, you would have two holes for the pins, two holes for mounting if your PCB supports and you have PCB mounted switches, and two holes for the LED pins marked by the red circle.

Quote from: Sup on Sat, 07 December 2019, 14:44:40

I think it also good if you show us your soldering.

Oh i see, no iam not wrong solder  to led pad.
Here is my solder on the pcb

[attach=2]

Title: Re: Help, after desolder and replace new switch
Post by: suicidal_orange on Sun, 08 December 2019, 04:20:32

I may be being stupid trying to think how diodes work but did you somehow kill the diode connected to both replaced switches?  Check them for continuity then swap the probes - they should only be connected one way.

Doesn't seem likely as your soldering looks great.