Static noise (maybe from einsy)
Hi there,
I own a MK3 since summer and I didn't notice this static sound before or it is new. Whenever I turn the printer on (no printing, heating etc.) I can hear it. I build an enclosure and added a LED stripe to the einsy board to power the LEDs. Everything else is untouched.
See the video below and maybe listen to it using headphones. You can hear a lot of noise from the mic but there is also this rythmic static noise coming from the printer. Is this normal?
EDIT: I did some cleaning of the audio: https://instaud.io/2MCe
Re: Static noise (maybe from einsy)
Yes, it's normal. Its from the power supply and is an audible side effect of the way the power supply works. In general, a lower cost supply is more likely to make noise, but occasionally, even expensive supplies do it. Sometimes, if they have a loose coil, they can whine at a very annoying frequency and volume. Your computer power supply probably makes noise too, but is drown out my the normal noise of the environment.
Unless the sound changes drastically, don't worry about it.
Re: Static noise (maybe from einsy)
The voice I described is not coming from the psu. The psu has a more silent and continuous sound. The sound I tried to record in the video is more random and a lot louder.
Re: Static noise (maybe from einsy)
The Einsy also has a power converter on it. That's about the only thing on the board that is capable of making noise.