This is the first S9 purchase I made, which has been stable running on Kano.Is. It has been within hashrate spec, and overall I think everything is as expected. (I have learned what to expect over my many BM purchases so when I say "as expected" I do not mean to infer there are not many things which should be handled differently, I mean it is as expected, and I was fortunate to receive this unit as it is.)
It is a Batch 1, which I had reservations about after the S7 fiasco, but as usual, there were not many choices for "after the halving" gear. That is not what this post is about, so please refrain from debating it being a sound purchase, halving effectiveness, etc.
This, is a Hardware question, which I have seen at least one other person post about but I have not found much in the way of answers.
I have one hash board generating almost all HW errors.
This is the first time bitmain has shown us this on the GUI (to my memory.)
So, one question I wonder is how common it is for one board to cause the majority of the HW errors?
Is it a warranty item? It is hard enough to get Bitmain to pay attention to warranty claims unless going through Yoshi, and he and I are in talks regarding a different purchase but he couldn't get me one out the door fast enough for me to play with so I ordered direct. I have not spoken with Bitmain about this, as again that would not get me anywhere near the reasonable responses I usually read here and I thank all of you in advance for such. This is one of the reasons I love this community, like a family there are those of us who do not get along, but we can still have intelligent conversations with positive outcomes.
So back on topic, how many of you are seeing this same thing, and what are your thoughts from both a technical and ideological viewpoint?
Should I try swapping the physical position of the board?
Swap complete electrical connections with another board?
What about a warranty pursuit? Sincerely it would come out of my pocket to get anything done reasonably fast because I would really buy it if it is even available. I don't want to be down.
My technical concern is this is a sign of a board which is failing, and I will end up down because of it. I prefer to be proactive.
Maybe I should swap it with one of the batch 2 unit hash boards and downclock it? Hmmm, just talking that point out, I have not downclocked the unit to see if I can reduce those HW errors, maybe that should be the first thing I do?
I think many of us believe Bitmain are finishing up the recent batches with lower grade chips. Maybe I have one which they considered fine due to the overall hash and error rates being within spec? What is the "spec" on HW errors.
How would you approach this with Bitmain?
Thanks again for input.
By the way, this is running on the Finksy / Jabber 2880 bo board with a 2880 PSU without any other hardware connected to this PSU. I originally set it up this way because I always burn in my units on individual power supplies so I know nothing else is a variable. This one has been left this way until I had time to sort through this particular issue.
I plan to move it to a 4k setup from Jabber / Finksy with another S9 once I complete the burn in on that unit.
