Quote from: philipma1957 on Today at 07:37:29 PM

Quote from: danieleither on Today at 07:15:40 PM

I have a T21 which was working perfectly on all 3 hashboards. I had to power down for maintenance (not on the miner itself) however when I powered back up, this miner now has missing ASICS as follows:

[2025/04/21 19:02:27] WARN: chain#1 - 107 of 108 chips detected, attempt 1
[2025/04/21 19:02:27] WARN: chain#2 - 15 of 108 chips detected, attempt 1
[2025/04/21 19:02:27] WARN: chain#3 - 0 of 108 chips detected, attempt 1

I'm no stranger to mining, or missing chips (at least on my Bitmain junk) however I find it strange this was working perfectly then has such an issue after a simple power recycle. I have tried the obvious and re-seated hashboard and control board connections to no avail.

So my question, is it possible this could be a control board issue rather than dead hashboards?

well three hashboards from good to bad with a controlled turn off is odd.

did you try swapping three white wires from controller to hashboard?

i am running four t21s but on six cases two boards per case and epic controllers.

i have had one bad epic controller that gave me false readings.

i used about 17 epic controllers.

and i get a dead board read on and off with one t21 board.

So it is a definite maybe the controller or the wires and less likely the hashboards.

I didn't. I was on a tight schedule with no time for further investigation as I was heading off on holiday. I am now back home, however the site is very remote (3 hour drive) so just trying to get some ideas before I drive down there