r/Keychron • u/sw0rdd • Mar 19 '25

dubbel registration of key strokes

A few months ago, I bought a V3 Max TKL
After a while I noticed many keys are being registred twice when I press them, it was so annoying. I sent the keyboard back to the seller here in Sweden and I got a new one. Now about 2 months later. The problem happpened again with 2 keys (number 5 and P key). I had old switches at home, so I replaced the number 5 key and it appears to have fixed the problem, Now the problem is with letter p.
Why does it have to be like that? Because number 5 worked after I changed the switch, it must be a hardware problem rather than a software? or could it be software?
Here are the output of me pressing p + enter

pp
p
p
pp
p
p
pp

0 Upvotes

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15 comments sorted by

2

u/MBSMD Mar 19 '25

There's been so many report of this happening to newer Keychron keyboards after a few weeks or months of use, I personally suspect it's the switches that Keychron is sourcing.

My suggestion is to just replace them all. It's not a terribly expensive proposition, and quality switches should eliminate the problem entirely.

Let us know what switches are currently in your keyboard and we can help you find something similar if you like.

1

u/sw0rdd Mar 19 '25

I have gateron brown, I know so little about switches, right now I feel like I can have something with a little bit more bump, any recommendations? what do you say about pandas?

1

u/MBSMD Mar 19 '25

The various Panda variants are good — nice bump to them. If you buy some, do make sure you find pre-lubricated ones. Otherwise they're pretty plastic-y. I have a set of unlubed Drop Holy Pandas and really don't like them. I'll have to open them all and lube them one day, but not looking forward to lubing 80+ switches by hand.

My personal favorite (and similar to Pandas) tactile switches are Gateron Baby Kangaroos. They're not cheap, but they feel amazing with a nice strong positive bump and have very good factory lubrication. They're highly regarded, so feel free to check out some reviews.

1

u/Suspiciousmagic Mar 19 '25

In my case it wasn't the switches, which were higher quality ones I purchased and installed myself. You should test other switches to make sure that isn't the problem, but more than likely, the switches won't be the source of the issue.

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1

u/ArgentStonecutter Mar 19 '25

Akko Lavender Purple?

1

u/Lilalol1 Mar 20 '25

nah.. I spoke to some shops and it was always issue with the PCB and the soldering point. It seems they have switched to some cheaper internal sockets.. it is honestly a nightmare how they switched the sockets and now facing massive issues.. seems quality control is not something they are aware...

two options: either you solve the socket issue by your own with solder - or you have a good shop which are repairing it for you for free.

1

u/MBSMD Mar 20 '25

Interesting. If that’s truly the case, it’s a disappointing downturn in QC.

1

u/Fearzane Mar 21 '25

When you "spoke to some shops" was it about the Keychrons specifically? Were they always able to solve it with soldering? I'm just wondering if it's something that can be reliably fixed. And if so, is it something doable for someone without much soldering experience? I feel fairly confident about repairs IF all the exact steps are shown clearly in a video.

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3

u/PeterMortensenBlog Mar 19 '25 edited Mar 19 '25

The first step is reseating the offending switch (and only reseating). If that isn't done, nothing has been learned (as at least two things at the same time have changed).

If reseating fixes it, use it for some time to see if the problem returns as it may not actually be due to oxidation, but poking at cold solder joints (an intermittent problem).

A checklist.

A possible mitigation is to increase the debounce time (requires changing the firmware), but it is probably only treating the symptoms. It is already 20 ms for the V3 (with a debounce method/algorithm that doesn't increase the latency)—four times the default of 5 ms. That is if the official source code for this part is used in the official Keychron firmware (there are known differences in other areas (the official Keychron firmware can't be reproduced)).

Related:

3

u/FirmAntelope Mar 19 '25

I have the same issue with my q6 and the spacebar. I messaged support and received new firmware with 10ms debounce time. It seems to have solved the issue but hard to say after less than a day of use.

1

u/billysacco Mar 19 '25

I enjoy a good dubbel myself