I’m getting loud, often intermittent, sounds when I turn on my printer and also in between prints. The latest episode lasted for about 30 seconds and I expect it’s something to do with the extruder fan (failing / needs maintenance / etc)? Sometimes it occurs for less time, but it seems to be gradually getting worse (louder and longer). I have a sound file, but not sure how I can post/attach this in the forum - hard to describe the sound. Any guidance would be much appreciated.
It sounds like it actually might be the power supply fan, to get this one fixed up I would blow some air into the intake, making sure that everything is off and discharged. There are some other solutions online although to my knowledge none are endorsed by Meanwell themselves (other than working outside of ELV other issues can arise with a lack enough heating).
You’re in the same boat as many other makers including myself!
The Ender 3 Power supplies work off of 240V, making any changes to the PSU will require a licensed electrician. To wrap up: Mains power isn’t just lethal. It’s lethal, stay safe & keep to low voltage projects.
First of all, where you say ‘power supply fan’, this is the one near the extruder you are referring to isn’t it (reason I ask is that it’s the fan enclosed right next to the extruder that is definitely making the noise)?
In terms of blowing some air into it, what will this achieve? Would I use a fan to do this? Forgive my possibly naïve questions here.
I will certainly not get in over my head, nor play around with 240V! Good reminder.
On speaking with another Ender 3 V2 user they get a similar sound to what I’m experiencing. So I’m not actively seeking to solve this problem any longer, but I feel I should try to understand since you’ve kindly offered some help in this regard.
I think Liam was refering to the one in the power supply itself. Being underneath the print bed for the V2 and mounted to the side for the Pro.
Blowing some air in should remove and dust build-ups hopefully allowing the fan to have a cleaner intake of air. Compressed air is the norm when cleaning out fans but if you have some big lungs a quick burst of air can get some dust out (its not as good since you are literally blowing moisture in).
No such thing btw!! You have to learn somewhere!
Ahhhh, if its the fans on the extruder themselves, then replacing them altogether is another option. Noctua fans are great but you might need some extra bits and bobs between the mainboard and power supply! CHEP covers it in detail here(This is for the Pro, I dont have a V2 yet but should be a very similar process): Quiet 12V NOCTUA Fan on 24V Creality Ender 3 - YouTube
Its a bummer that the fans are now the loudest part of the whole printer considering the silent TMC drivers.