Noisy MC board fan - and possible fix

Bambu Lab X1 Series Troubleshooting
82

Wish you could just buy these rather than spending $40 on stuff you only need once.

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83

yeah thats why i used shrink solder connector with a good lighter and soldered the cables together.

https://www.amazon.com/s?k=shrink+solder+connectors&sprefix=shrink+sol%2Caps%2C178&ref=nb_sb_ss_ts-doa-p_1_10

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84

I think Bambu will get it corrected. Here in EU we have 2 years warranty. Imagine how many fans Bambu has to send out!!!
Each time you get a new fan, the warranty on the fan is extended to two years again. And with the rate these fans go bad, they will have to send fans forever. So they have no choice, other than to improve.

I have a fryer (food), it is cheap, but very good to work with. It usually breaks after a year or so. I take it to the shop and gets a new one. I am on number 4 fryer in little over 6 years. So I get a new each 1,5 year, for free.

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85

Do you have a big mailbox? :wink: :mailbox_closed:

86

Yo Onslow,
President of your fanclub here! :+1: :partying_face: :+1:
What are you shipping over mate? :face_with_peeking_eye:

Always following your teachings Onslow!!!

/Silverbullit a.k.a Tobbe

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87

Give this man an award!!!

88

@dlowry717 This is a great idea to enable easy upgrades.

I am cheap and ended up salvaging the 4-pin JST GH 1.25mm pitch connecter from the broken Bambu OEM fan to make a pigtail. The Noctua NF-A4x10 fan comes with an extension for its connecter so I used the male side to splice into the JST GH pigtail.

I now have what you have shown above to make fan replacements, literally, plug-and-play. Thanks for this great idea!

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89

Just about to do this to my machine. A week old today and it was shipped from a brand new batch that only just came into the UK 10 days ago. MCB fan noisy on startup like something is stuck in it, poor buggar. Anyone had some reimbursement from Bambu for the stock fan?

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90

Open a ticket, send in a video with audio of the fan noise, get a store credit for the fan.

OR

If you have the skill set, buy a noctua fan 40x40x10 mm, 5V, 4-pin PWM, either make a new plug for the motherboard, or splice the wires into the old one. Lots of us have gone this route.

When mine failed I could not find my support ticket again to send in the video, and they were out of stock on the fan with a month+ lead time. I had the Noctua the next day from Amazon.

Next will be my Chamber fan. Doing the same thing, but I will gladly take the store credit and get something else.

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91

Exactly my idea, i already have the noctua fan on order for tomorrow. However i went with 40 x 40 x 20 as above.

92

Just replaced my MC fan with a Noctua 40x40x10, and it works a treat to very little fanfare (ie., noise :slight_smile: )

I went the splice route. I used the Scotchlok connectors to do the splicing, and found I had to fiddle one of them some extra to get it to make contact. I expect that the connectors are for thicker gauge wires.

@Olbabybora Yep. I got my $20 credit. I spent $10 on a standard fan just in case my splicing to the Noctua failed, but the other $10 went to a couple rolls of filament.

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93

but still go to get the store credit for some filament or parts :slight_smile:

94

I take it that this is still an issue? My X1C arrives tomorrow. Guess I’ll print up the mount today to fix this issue before it even starts. Thanks for all the great solutions. Looks like a nice clean fix to a design oversight. .

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95

I went and bought a spare noctua, still waiting for the oem fan to break after six months. :man_shrugging::laughing:

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96

I don’t know if it was a bad batch of fans or not but for reference, I ordered my printer January 5, got it January 11 and now have 405 hours of print time on it. The fans sound the same now as day one. I can just hear the MB fan, it’s in no way annoying and does not register at all on my Radio Shack 33-2050 Sound Level Meter even from a foot away.

97

Lucky! :slight_smile: And it’s quite possible that there’s a bad batch, or the batch is highly variable.

Different people. Different circumstances. Different experiences.

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98

I’d hope that by now Bambu has switched manufacturing to use the ball-bearing fan, but maybe they wanted to use up the bad ones first?

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100

Supposedly the new fan uses ball bearings rather than “oil bearing”.

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101

S = Sleeve Bearing
B = Ball Bearing
…is my uninformed guess. Thing is that sleeve bearing fans dies at higher temps, where Ball Bearing just keeps on going.

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102

You are the man! Or woman haha. I had the noisy fan from the first couple days of my machine. Support confirmed it but what’s the point of putting the same fan back in? Then I found this thread.

Your bracket printed, fan purchased and away I went.

Used some melt solder connections to your pin out wire guide and voilĂ ! A dead silent, better quality fan and setup.

Thank you so much.

I have tried to add pictures but they’re over 10mp so I’m going to make a post on the bambu lab official user Facebook page.

1 Like