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geekhack Community => Keyboards => Topic started by: JeremyWon on Sat, 30 July 2022, 13:05:26
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Hello, over the last few days I have been desoldering and lubing all the switches on my Keychron K2 V2 (non-hot swappable). When it came time to solder back on all the switches and test the keyboard. The middle character row was not functioning properly, I attached a image below (don't mind the functions row or the shift and command keys). What should I do to fix this problem. Thanks in advance.[attachimg=1]
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Short answer - find the broken trace and bridge it :)
There are a couple of keys in the row still working so it might be easy, but usually Keychron links back to the chip in the middle of the row. I've never looked at a K2 though so some nice clear pictures of the PCB would be great. Hopefully it's not black...
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Thanks of replying. Unfortunately the board is black. I have done a continuity test with my multimeter and all of the points seem to be connected. I'll check again.[attachurl=1]
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After double checking all the traces with my multimeter, they all seem to connect to the small IC at the bottom right of the board.[attachurl=1] What should I try now???
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If one pin on each of those switches are connected to each other (looks like it's the pins nearer the spacebar edge) and to the chip either there is a short to something on one of them or that pin on the chip is dead. It is unlikely that you killed a pin while soldering but I'm not seeing any shorts either...