I've several Alix 2D2 boards which are dead. After looking, it appears that the D2 component (SMBJ18A) is burned (at least)
As it happens 2 times at the customer, do you have any idea what can be the cause of it ?
Was the power supply replaced after the first board failed? Sounds like maybe the customer was running a 24v supply or a supply with the polarity reversed.