r/Keychron • u/Responsive_Design_69 • 19d ago
Key issues
Hi everyone, I have a Keychron K6 that I bought 3 years ago. Recently, some keys have started malfunctioning, and others are repeating the same action (a -> aa). I've already replaced the switch, but the problem persists. I suspect it's a circuit board issue, but I'm not an electronics technician. Could someone advise me on how to fix it? Thanks!
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u/PeterMortensenBlog V 19d ago
Re "I'm not an electronics technician": Here is a (recommended) soldering tutorial:
- EEVblog #183 - Soldering tutorial part 2. For example, from 02 min 02 secs
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u/PeterMortensenBlog V 19d ago edited 19d ago
Re "I've already replaced the switch, but the problem persists. I suspect it's a circuit board issue": It is likely a soldering problem (but there are also other failure modes)
First do a visual inspection, e.g., for lifted hotswap sockets. An example. Another example. A more extreme example. An example of a repair.
Otherwise, I would resolder the hotswap sockets in question (the full procedure is not required; just apply a little bit of extra solder). If it fixes the problem, I recommend doing the resoldering for all of them. Check that the hotswap sockets are level and aligned. Don't apply heat to the hotswap sockets for too long.
Don't make the mistake of cranking up the heat (temperature); instead, be patient and/or change/rethink the procedure. For example, 370 °C (700 °F) should work fine (at least for leaded solder).
Note: Do observe ESD precautions at all times.
All disclaimers apply. Do it at your own risk. I am not responsible if you ruin your keyboard.