I'm a bit concerned about if I will manage to unsolder/solder it with hot air without messing all this resistors/capacitors around.
I'm wondering if it will be wise to do it on my own.
My question is if such replacement could be done by supplier under warranty?

Thank you for suggestions.
I just did some probing. And there is 12 V on R92 and 0V on D2, so I guess that U3 has been damaged and I will have to replace it.

I have V1.04b revision of Duet.

It doesn't look damaged at all.
Well I guess it is large.

I'd like to ask for a help in fixing my Duet board.
So I succesfully connected everything and managed to do few prints. And now after connecting hobby servo to pins shown in picture I managed to damage it somehow. After connecting power servo rotated a bit.
When I plug 12 V, VIn led is ON but 3.3V is not. When I plug USB duet is fine and i can connect via WIFI.