Hello!
And maybe someone knows... How can they be disassembled ? The worst case scenario - I want to change those fans to something more quiet.
Thanks!
Received the answer! Yoo hooo!!! But while waiting for one, I couldn't resist and opened one up
I do not recommend opening them up due to immediate loss of warranty, but...
If someone needs (warranty expired or something else), it is quite simple.
1) At the bottom (where the lens is), you see supposedly 2 screw sites but they are hidden beneath black mesh-type sticky tape. Use sharp tweezers to take them out - only adhesion of glue holds them in place.
2) Beneath that you will find 2 TORX N10 screws - unscrew them.
3) At the top there are 2 click mechanism sites. The body itself is made from very soft plastic and use of screwdriver can result in some aesthetic damage

. So just lightly squeeze the body so that it deforms a bit and the mechanism will come loose (if need be - poke lightly with something to help this process). Repeat on the other side.
4) Now you can pull all of the interior out.
5) To get to the fan you need to:
a) Take off knobs from potentiometers and unscrew the nuts holding them in place.
b) remove plugs from the 3.5mm jacks.
c) unscrew 2 screws on top
d) release the top circuit board (white distancers)
so now you can fiddle with the power cable and take it apart. The fan itself is mounted with 4 rubber feet at the top plastic panel - use force to release it.
So in my unit there was an Everflow fan, model: F126025SL. From looks of it, it is not quite well balanced, which is why it makes this annoying noise. The noise would be acceptable but it has this one particular annoying component to it which makes me crazy. So I think I will go with SSO bearings and similar specs.