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Author Topic: S9s running warm?  (Read 128 times)
ccgllc (OP)
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July 24, 2018, 08:50:16 PM
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Spent some time today checking temps on my miners (easily done with Awesome Miner by just sorting on the Status tab).  Anyhow, out of ~120 S9s I found 5 that were running hotter than the others.  Most had reported chip temps in the 60s-70s.  These 5 were 80+.

My first step was to do what I thought was the obvious thing:  tear them down and blow them out.  That actually helped 3 of them.  The other 2 continued to run warmer than expected.

Opened up the web gui on each and discovered both had one fan only running around 2000-2600 RPM.  Swapped the fans out (with spares I had previously purchased from Bitmain), and goodness returned.

Learning for today:  Just because it boots and passes the BIOS fan test, doesn't mean those fans are running correctly!

Oh, for the record: I started down this journey today because Awesome Miner alerted me that one of the miners hit 96C.  Nice to be notified.  Not good that a miner was running at that temp.  I should also note the intake air temp is 90F (32C) right now.

Mined for a living since 2017.  Dabbled for years before that.
Linux admin since 0.96 kernel and Slackware distributions on (4) floppies...
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