Loud rattle / sympathetic vibration from power supply...
I am getting a very loud vibration from some component inside the power supply. The video below illustrates it:
Is this something I can address by opening the unit and binding something?
Pat
Re: Loud rattle / sympathetic vibration from power supply...
There are two noises here - One is a ticking noise in time with the Pulse Width Modulation of the heated bed - the LED on the bed is in time with that ticking and Prusa has said it is to do with the magnets on the bed causing a small vibration of the bed, like a loudspeaker.
The other noise, when you tap the power supply, is the insulating sheet within the PSU that moves a little, especially during rapid head movements making a "tizz" noise at times. I think the software guys are looking how they can minimise the ticking when it comes to heating up the bed. The PSU? Well Some people open theirs up and use some adhesive but I would not reccomend this.
Re: Loud rattle / sympathetic vibration from power supply...
Thanks. I was aware of the heater ticking (probably should have turned it off for the video). As for the vibration - It is severe enough in some movements that I wonder if it is affecting prints. Not to mention just super distracting and conveys a sense of poor build quality that may or may not be warranted... I really want to love this printer. I may have to open it up (carefully) and have a look.
Pat
Re: Loud rattle / sympathetic vibration from power supply...
There are two noises here - .....
The other noise, when you tap the power supply, is the insulating sheet within the PSU that moves a little, especially during rapid head movements making a "tizz" noise at times. I think the software guys are looking how they can minimise the ticking when it comes to heating up the bed. The PSU? Well Some people open theirs up and use some adhesive but I would not reccomend this.
I snaked a roughly 6" long piece of filament between the case and the plastic and that helped immensely.
Re: Loud rattle / sympathetic vibration from power supply...
Ah, thanks. I understand now. Interestingly, there are empty screw holes on the back that look like they might have been intended to stop exactly this problem. Doesn't look like the insulator has anything to accept a screw though.
Re: Loud rattle / sympathetic vibration from power supply...
I snaked a roughly 6" long piece of filament between the case and the plastic and that helped immensely.
Just incase anyone plans to do this... Don't use conductive filament. I mean, it may seem obvious... but... yeah.
Non-conductive filament. 😉
Hi, I'm Sean. I used to work on CNC machines.
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Re: Loud rattle / sympathetic vibration from power supply...
I snaked a roughly 6" long piece of filament between the case and the plastic and that helped immensely.
Just incase anyone plans to do this... Don't use conductive filament. I mean, it may seem obvious... but... yeah.
Non-conductive filament. 😉
What he said!!! I thought it was obvious but I should know better 😀😀
Re: Loud rattle / sympathetic vibration from power supply...
The problem with the filament solution is that the insulator is so thin it really needs support all along both edges at least... I'm guessing we could make (print) something with fingers that slide in... but... I'm hoping Prusa will offer some officially "supported" fix or swap these.
Re: Loud rattle / sympathetic vibration from power supply...
Mine was a hit and miss, but the rattle was driving me bonkers and it was the best I could come up with while sitting there clenching my teeth. Is it ideal? No, but it works well enough and is inconspicuous enough not to look ghetto.
Re: Loud rattle / sympathetic vibration from power supply...
mine does it as well. If i squeeze the case slightly it stops. Looks like minor surgery is in order.
Re: Loud rattle / sympathetic vibration from power supply...
Ditto. Mine only happens on large Z movements (beginning/end of prints). Not a big issues since most Z movements are tiny and quiet.
Yes, it's a nit-pick, but I still would like to take care of it in case whatever is resonating in the power supply will eventually fail.
This is what happens when you build a quiet printer 🙂
Re: Loud rattle / sympathetic vibration from power supply...
One of my 'rattles' turned out to be bad Y bearings letting the bed rattle. 🙁