Psu suddenly starting to make busing noises
I have had my MK3 For little over a year and then today my psu suddenly started making buzzing noises I have to say I am kind of concerned is there anybody The has a explanation?? FX is it normal or should I change it immediately ??
Best Answer by Eric E:
the psu changes medium voltage ac from your wall to low voltage dc for the printer’s 24v dc needs.
That ac voltage is jumping back and forth from the wall at 50 to 60 times per second. The conversion process jumps that up 2, 5, 10 times that. When the jumping is translated to mechanical motion, you hear sounds. Pegging a sound to a note on a piano or guitar, or just a sound in your head can tell you a lot.
The buzz is either a transformer or choke slopping around in it’s potting, or some capacitors falling out of spec.
could be the psu just breaking in, and is just fine. Could be some dodgy capacitor or two being fussy.
If the noise stays stable, you should be good if the noise gets worse, it will one day just fail with nothing spectacular Billions are made each year, and they don’t catch fire
I am not 100% current on what is being installed these days, but you likely have either a meanwell or a delta psu. Nice stuff
Sry
Yes sry
Agree
Well that was my thought since it started suddenly hvor startede print (1h) checked on it twice and it was going good then when I can back about 10 minutes later the print was done but the psu was buzzing I tried turning it off and on but as soon as a flip the switch on it started buzzing again
.
Are you sure it's the PSU and not the heated bed. I seem to remember that one of the recent firmware fixes changes the frequency that the heater is switched to prevent it being audible.
Obviously if its the PSU you should turn the printer off and contact Prusa support (use live chat NOT email).
Unfortunately
Yes I am unfortunately sure that it is the psu 😕. And I did turned off immediately
And I think you are right I will try that thanks
Mine whistles like a quiet little tea pot
Both of mine make an interesting noise.
solved??
I have talked to livechat and send them af video and they say it sounds normal so apparently I just had a very quiet psu and now I have a normal sounding one but at least I'm a Little less afraid of it going off in fire every second ^^
noise
I have talked to livechat and send them af video and they say it sounds normal so apparently I just had a very quiet psu and now I have a normal sounding one but at least I'm a Little less afraid of it going off in fire every second ^^
Normal noise is good noise. Mine might buzz. I can't hear it so I assume it does not.
Happy printing!
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Chuck H
3D Printer Review Blog
Maybe
the psu changes medium voltage ac from your wall to low voltage dc for the printer’s 24v dc needs.
That ac voltage is jumping back and forth from the wall at 50 to 60 times per second. The conversion process jumps that up 2, 5, 10 times that. When the jumping is translated to mechanical motion, you hear sounds. Pegging a sound to a note on a piano or guitar, or just a sound in your head can tell you a lot.
The buzz is either a transformer or choke slopping around in it’s potting, or some capacitors falling out of spec.
could be the psu just breaking in, and is just fine. Could be some dodgy capacitor or two being fussy.
If the noise stays stable, you should be good if the noise gets worse, it will one day just fail with nothing spectacular Billions are made each year, and they don’t catch fire
I am not 100% current on what is being installed these days, but you likely have either a meanwell or a delta psu. Nice stuff
Don’t trust forum advice.
Thank you
Yes I was told to Keep your eye on it and concept prusa again if it gets worse thank you for your more detailed explanation ^^