Help - locate which pin corresponds to non-functioning key column

[glostis]

Hi,

Many thanks for this wonderful design!

I've bought a Falba wired Redox board (the recent version that comes with hotswap), and after a short while one column of keys (the 5 keys circled in blue in the attached screenshot) has stopped working. All other keys work just fine. I suspect this is due to a bad joint or something equivalent on a pin of the microcontroller.

• Being completely new to microelectronics in general, could someone confirm this hypothesis?
• I am trying to figure out which pin it is. According to the Redox PCB schematic, I suspect my disfunctioning column is col6, and therefore the bad joint must be on pin 10. Am I right? Or could there be a bad joint elsewhere as well?

Thank you

[mattdibi]

Hi, all your assumptions are correct. If you want to be extra sure you can use a multimeter to check continuity. Hope this helps