Hi there,
Short update :
-fan replaced, with a new from BBL. Noise level is the same, but more constant and less annoying.
-I printed a TPU sole for the new fan, which I placed between the fan and the heat dissipator of the drivers on the main board–> didn’t help much.
-To me, the main issue is that the main board fan is not controlled in close loop, it just starts acording a preset.
-All in all that is a big dissapointment for me, the general noise level of this A1 mini is much higher than a Prusa Mini (external power supply, passive cooling on mainboard).
Hopefully BBL can fix it in further update?
BR