didn't found info while googling around so I'll ask here if anyone is willing to help and/or experienced something like this.

couple days ago I managed to build a little farm with ~45 D3s, so far all of them are working nicely except of one,
hashrate drops to 0 after around 10 minutes of working, after rebooting it starts mining on 19Gh/s and then bam and 0. I did try remote steps like resseting, reconfiguring, lowering frequency, etc. but still same.
With my experience in bitmain product in this case I have two options, play with firmware or change the control board itself.
can anyone give any advice?
cheers