A10 pro innosilicon FAULT

I recently bought a couple of ASIC A10 pro miners. The thing is that one of them suddenly stopped working. The “fault” led light it’s instantly turned on and I tried everything to fix it but there’s no way. If someone had a similar experience maybe he could help me. I changed the PSU, the ethernet cable, checked the batch tool from innosilicon (the miner it’s not detected) I had it’s temperature registered minute by minute and never went higher than 53 degrees (celsius). On the other hand, the room temperature was always in the 30-35 range. Maybe I’m missing something, the miner was working flawesly for the first 5 days. Thanks a lot!