this post was submitted on 01 Mar 2026
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Hello everyone,

I'm asking the Lemmy: I've been the owner of an Ender 3V3 SE since Christmas and am quite happy with the printer so far. The price/performance ratio is good. Minutes. Only the fan noise when you turn on the printer and preheat it for the first 5 minutes worries me. It doesn't sound healthy. In my opinion, it's both fans, first the power supply, and when you preheat PLA, the hot end fan as well. When I print, everything sounds as it should.

I've included a few video links:

Power supply:

https://loops.video/v/e97ZQ8YsEa

https://loops.video/v/e987R8wBEb

Then I preheat for PLA:

https://loops.video/v/e98jjSpPEe

I'm curious to hear what you think.

Best regards,

Patric

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[–] daannii@lemmy.world 2 points 3 days ago* (last edited 3 days ago)

I have had to replace both fans on that printer more than once.

Also a loud noise means something is in the fan.

Your bigger concern is when heat creep destroys your entire heat block and nozzle from auxiliary fan failure.

Or when part fan doesn't sufficiently cool the layers so you get a lot of lifting and squishing.

Keep an eye on those.

Fyi. The fans are wired backwards. If you replace with official creality parts you are fine. If you don't. You will have to cut off the connector on the new fan, flip it. And reconnect the wires.

Also many replacements fans have the wrong size connector too.

My advice. Just buy official creality ones.

Be mindful when replacing the part fan. The duct must be positioned perfectly and firm or you will see print quality declines.

Also. Always unplug your printer before working on any electronic components. If you don't. You can destroy the circuit boards.