psync
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Posts posted by psync
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I looked at the schematic (open source, yay!) and I think the rear fan is on J20, and is not a PWM controlled one. I may have a fan with a bad bearing then, but I'd still be interested to know if that's the norm before I try to find a replacement fan to swap it out with. The machine is much quieter than the original UM, though the buzzing fan on mine overpowers the other noise at times.
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Hi everyone,
I got my UM2 a few days ago, and I've noticed the rear fan on the back is quite loud. Is this expected? It doesn't seem as loud when a print is running, and I'm not sure if that is controlled by a PWM. The fan seems to be running all the time, even when my printer is idle, so I wonder if there's a short somewhere.
Could you speak up a little?
in UltiMaker 3D printers
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Thanks for the info! I'm in the USA too; I would be interested in sourcing a quieter replacement fan. I think there was mention that it was a 5V fan, but the schematics show it's hooked up to 24V (unless I read it wrong). Most likely the one I have has noisy bearings then.