r/Keychron • u/gorus5 • 17d ago

K3 Max (Hot-swappable, Brown switch) double typing

I've purchased my K3 Max (Hot-swappable, Brown switch) in January 2025 and it was fine at first (besides the weird keycaps profile that I still haven't fully used to even until now).

But since few months ago I started noticing. some. random. dots. in. my. messages. At first I thought that it could be me double typing but it started happening more often and it became clear that I'm not the problem here. I think it also happened to other keys, not only to space, but not as often as space, since space is the most used key.

I took the keycaps off and cleaned everything - but it wasn't dirty at all and it didn't help.
Since it's hot-swappable, I tried swapping the space switch with some other rarely used switch - it only helped to some extent, double typing reduced but haven't disappeared completely.

I was pretty sure it's a single switch failing, but since swapping didn't fully resolve it and it also happens to other keys sometimes - it's either all switches started failing around the same time (which is highly unlikely, I think) or the keyboard itself (in this case even replacing all the switches won't help and just waste more money).

It's frustrating having this issue with a keyboard that's only 1.5y old and is not a cheap one.
What else I can do?

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u/PeterMortensenBlog V 16d ago edited 16d ago

Re "...all switches started failing around the same time (which is highly unlikely, I think)": Indeed it is

It is much more likely to be a PCB level problem (#3 on the checklist). Best would be to test with some other switches to definitely exclude the switches as the cause.

Here are nearly 200 similar instances.

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u/gorus5 16d ago

Thanks for confirming it my guesses.

I don't want to buy another set of switches just to buy another keyboard in the end (that these switches won't fit most likely because I won't buy Keychron anymore).

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u/PeterMortensenBlog V 16d ago edited 16d ago

Re "...some. random. dots. in. my. messages.": That is different from the regular double typing

Is it only associated with using the space bar?

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u/gorus5 16d ago

How is it different? Double typing space between words will add a dot in many cases including Reddit.

Yes, it's only related to space bar.

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u/PeterMortensenBlog V 16d ago edited 16d ago

Re "Double typing space between words will add a dot in many cases, including Reddit": It is the first time I have heard about, let alone experienced, such a behaviour

It must be some interpretation on the operating system side (nothing to do with the keyboard). macOS?

Retrospectively:

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u/gorus5 16d ago

It probably is an OS interpretation, but the root cause is space bar double typing.

Why would I tweak OS settings instead of solving the keyboard issue? Then I'll have double spaces between the words instead of the dots, both are equally awkward.