Thanks @planetix!
However, on my X1C, the wires are bundled as black/grey/grey/white. There doesn’t seem to be any difference between the greys. You wouldn’t happen to know the ordering, would you?
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Dark Gray is next to Black. Light Gray is next to White. That help?
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@planetix, it does! Thank you!
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Same issue for me after 15 hours of print !
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Noctua fan installed. The “Omni-Join” feature is just a set of four pushbutton connectors that require you t cut and strip the ends of both cables. I ended up soldering them and using heat-shrink to protect. I like the end result - quiet and a useful air flow.
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Interesting Nairod! I don’t know that the board benefits from the extra cooling but surely doesn’t hurt it either.
Granted, the stock fan isn’t ideally placed, but it’s really just there to aid convection around the board. The biggest problem is that the stock ones are failing - how widespread it is only Bambu Labs knows but it’s clearly not a few semi-isolated incidents.
When mine went it took 4 days of waiting back and forth with Support only to get a store coupon to buy the fan…which in the US is out of stock until the end of the month.
Here’s my Noctua replacement in action:
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I love this idea, as my stock fan is failing, and its such a pain to replace since its in a tight spot, might as well put this larger fan in here and not replace with the original location fan at all. Seems like this would be better airflow and easier to replace in the future, though i bet it lasts for years.
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This is exactly the right path to follow, nice! Thanks for sharing. I’ve installed the replacement fan that Bambu Labs sent me (as an aside their customer service has been excellent) but I’ve been keeping an eye out for the inevitable noctua fan upgrade 
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I’ve noticed a 15 to 20C degree difference with my 6025 fan placement on the board hotspot pictured in the thermal view
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hello guys,
very usefull post, thanks to all of you for sharing your experiences and tricks.
I have questions:
- is there any impact into PWM management from the software? I’ve heard guys who changed the chamber fan and when he set 100% flow on the app, it returns to 40%.
- do any of you also changed the chamber fan? it seems it can reduce the noise around 20db.
- is the noctua quieter than original MC board fan (before failing)?
thanks!
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The software does not see this fan - it is there only to cool the board.
The original fan was quiet when it was working correctly. The Noctua is about the same.
As for the chamber fan, you can manually reduce the speed using the controls, or (what I do), save a copy of the filament profiles to set the fan value at 180 instead of 255 (max). This reduces its noise to a modest level. There is no need to replace the chamber fan.
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Hey,
So about the MC board fan, it seems the main problem is not the fan itself but its location is not it?
it would mean, by keeping at the same position the new Noctua fan, it will also heat and be damaged.
So a solution could not be simply to keep the original fan and move it from its original position to there : https://www.printables.com/fr/model/366010-6025-nf-a6x25-5v-pwm-noctua-fan-holder-for-control
?
In my case I will receive my X1CC in few days and I wonder if before starting to use my printer and damage the original MC fan, I should replace directly by a noctua or just move the original fan in this new position?
In this video : https://www.youtube.com/watch?v=3M76VUJzwqY&t=611s
After his MC fan started making noise he replaced it with a new one (from bambu’s brand) and put it at the same place. And in the comment he recently said that the new fan was started to heat and he planed to replace it AGAIN.
I would love to hear what you think about this.
Do you think the original fan will fit in this support: https://www.printables.com/fr/model/366010-6025-nf-a6x25-5v-pwm-noctua-fan-holder-for-control
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Do you use the both original bambu’s fan + noctua 6025 or only noctua?
Do you think the original bambu’s fan could work instead of the noctua’s position?
I am using both at the same time until one fail yes
Someone only used the 40x10 stock fan from Bambu and placed at the same spot I did, it’s on printables
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The issue with the noisy fan is the fan. Some might argue that the fan’s position is not great, but I think it does what was intended. Bambu has now switched to a dual ball bearing fan that should be more reliable.
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Thanks so much for help !
Do you think new printer already get this new fan with dual ball bearing?
Do you think the fan in their shop is the new version Control Board Fan | Bambu Lab EU ?
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I don’t think current printer stock has the new fan. I don’t know about the EU store. In the US store, the fan is shown as shipping at the end of January, but I’ve seen some people report they already received the new version.
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Thank you for this information, the stl and the fan link. so happy to get rid of that noisy fan!! Thanks!!!