I decided to test the mini 1 last time before sending it to Bitmain. I tested 1 hashboard at a time and and it turned out 1 of the board was causing the PSU to trip. After opening it up, found the burned hashboard. Mini is hashing fine with 2 good boards now. 3 other Z9s and 2 A9s in the same server case are running fine.
Server Case, it is vented on top with a 1500 CFM QC-ES-1500 fan.
Server Case, it is vented on top with a 1500 CFM QC-ES-1500 fan.
I don't think that was a heat problem It looks more of a surge or a short on the chip pins inorder for it to explode out and burn the board like that it would need a full short circuit or surge with good amperage. Heat will brown or discolor the board and the component just fails internally in most cases that I have seen in 30+ yrs of electronics