Yesterday I went to Clifton warehouse and w tore down and reorganized a rack of gear.
Took all day. we did s9's
131
132
133
134
135 I knew this one had an issue136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
155
156
190
191
192
193
I had just did new firmware on all s9's and they were all doing 5000gh a board for the last 10 days as we finally had setup good cooling in the warehouse. I did a video I need to post later today on youtube.
I looked at miner 135 first I knew some thing was wrong turns out the psu burnt and maybe 1 board is now dead.
I looked at every miner and everyone (20+) had browning on the middle boards when set to 15th vs 13.5 th.
So oh
shit.
On the good end every one is now clean and set to 13.5 th or 9 th or 4.5 th as we had some miners with 1 and 2 boards.
I feel happy that
1) I never tried running them clock to 15th for an entire year I ran them at 13.5th
2) all work but one once set back to 13.5th
3) I waited to test when all fans were done correctly and room was cool.
4) worst case is I lose 13.5 th miner out of 1260th
second oh shit Is I have a dead m20s no sign of life
I do have a spare psu
will test it out maybe in the 26th
I will hope it comes back to life this is the unit I got in may so it has run from may to december with no issues.
So our large set should be 68 + 13.5 = 81.5 higher and 20 s9's should be 15th not 13.5th that is 30th.
the high speed gain of 30th is a no go a loss of 30th
the one dead miner may get back to 4.5 ot 9.0th so a lose of say 5th
so we lost 35th for sure combo of dead gear and loss of over clock
I hope I fix the m20s as it is 68th.
a loss of 35 is better then a loss of 103th.
Up date
I have 2 p11 psu's and 0 p21 psu's
So I will need to order one.
I found a usa based company.
https://thecoindad.com/ they do repairs and have parts may try them.
https://twitter.com/Fix256/status/1208109120072691718they have one for about $260.
if I order from pangolinminer it is less about 210 but I may want to find someone fairly close for repair help.