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[Pecker]

Help with fan speed on Antminer S9

I have 4 S9's that run smooth and you hardly ever hear the fans on any of them speed up or slow down.. (some with auot freq, some without)

I have another used S9 miner I am installing, everything is great, except the fan speeds up and slows down every 15 to 20 seconds, slow, fast, slow, fast..

Any thoughts or ideas on why this is happening and what I can do?

There was a post on bitcoin forum about editing the fan speed thru HTML and I tried that...set the fan speed to 70% (according to the kernel) and it is still doing it...

Really, really annoying...  There has to be a workaround somehow...  How can some do it and some not?

Looking for any thoughts or ideas that might help...

Thank You!

Mine On Dude!!

Try to change the controller for a new one, that should solve it. 

So are all the controller boards for S9's the same?  I see several listed on Ebay...

Is there any difference in the 13.5 board than any others or are they all the same?

Thanks

GH

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[perfectplus174]

So here is what is happening now...

Checked the wiring for fans and it was all ok

Rebooted machine setting back to my backup (which undid the fan speed) or at least set it to 80  should it be at 100?

Temps were in 70's and mining at 13.5 for about 5 minutes...

then mining went dead...not mining anything and still fans revving up and down...

show fan 3 at 5,040 and nothing on any of the others...but both fans are running..

I wish I could figure out how to upload the screen shot on here...

Should I try a firmware upgrade?  If so which file for the upgrade...

Machine is an S9 13.5T Serial #YDFT14PAGAJAJ7149 running kernel version 16.8.1.3

Thanks for the help?  One comment was to replace the controller board, which I dont have..

Thank

GH

I have some used S7's that are getting hot and shutting down. I've cleaned them out and upgraded the fans and they run longer, but eventually lose one of the boards. I have to turn down the chip frequency from 700 to 693 and set the fans to 90% minimum and have had no problems. It is hashing at 4.63 ths instead of 4.73 but I have not errors. This at least saved me from losing a board over and over. Also, when this happens, my fans would go up and down as you mentioned. I'm not sure if it's the same issue as you, but you may have to play with the frequency and fan setting, but I would make a change and monitor then make another instead of changing several things at once. Just my thoughts, I hope you figure it out.

[Pecker]

Check the yellow signal wire for that fan, I believe the yellow is the fan speed ( tach) sent back, and if its reading 0 on the web interface, there is a problem.   Download the newest firmware from bitmain.  I use only the Autofreq one dated November of 2017

ok will do...

so after reboot, the fan #2 says 6000, Fan # 6 says 30,600...

Still mining though up to 15 minutes so far...

Probably will go ahead and try the firmware upgrade...I guess...

On a sidenote, anyone ever find there doing something with these things all of the time..

Of course I got in and paid to much for miners, now everything is down, and consuming quite bit of my time

I was hoping to set them up let me go... at least 4 of the 6 are doing good...

this one and another one that mostly only mines with 2 boards, although occasionally the other board works on a reboot...

Just my luck, but hey I'm here and still mining...

just frustrated, lol

Thanks to all of you for your help!

GH

[AerialGopher]

so looks like your wire has a loose connection.  you probably were wiggling it while you refreshed the page to see the fan speed?  a loose wire will cause it to think its more pulses than what the tach on the fan is reading,  hence the very high number.  That fan should be around 6000 as well.  The sensor in the fan might be bad too.  I dont think in the last 35 years of any electronics I have used that had a tach on the fan I had it not working, but never know.
inspect the cable end and see if the wire is crimped onto the metal pin inside the connector, and make sure the pin is seated properly in the connector.  You can  remove the pin/wire from the plastic connector by moving the little  edge of the side of that pin so it slides past the plastic of the connector.  Like a small tab.  I would look at it and make sure there is contact between the wire and the metal pin, and make sure the opeing op that pin is not too loose that it doesnt actually contact the pin on the control board.  Like " Throwing a hot dog in a hallway"   X GF told me that..  :-)
You can try a fan from the other miners too and swap it out to determin if it is the fan or the control board.

Update the firmware should be first.

[Pecker]

so looks like your wire has a loose connection.  you probably were wiggling it while you refreshed the page to see the fan speed?  a loose wire will cause it to think its more pulses than what the tach on the fan is reading,  hence the very high number.  That fan should be around 6000 as well.  The sensor in the fan might be bad too.  I dont think in the last 35 years of any electronics I have used that had a tach on the fan I had it not working, but never know.
inspect the cable end and see if the wire is crimped onto the metal pin inside the connector, and make sure the pin is seated properly in the connector.  You can  remove the pin/wire from the plastic connector by moving the little  edge of the side of that pin so it slides past the plastic of the connector.  Like a small tab.  I would look at it and make sure there is contact between the wire and the metal pin, and make sure the opeing op that pin is not too loose that it doesnt actually contact the pin on the control board.  Like " Throwing a hot dog in a hallway"   X GF told me that..  :-)
You can try a fan from the other miners too and swap it out to determin if it is the fan or the control board.

Update the firmware should be first.

Have updated firmware... did not help..

Good idea on trying fans from other miner...

still revving up and down though... will gt back on it when I get back home early next week..headed out of town fishing trip, Yeah!

I just plugged the s9 that has a board down back in for now

Gotta go momma hollering to get my ass home, lol

Thanks!

[Prowler310]

Anyone here have any experience with over clocking S9's
Can you get better hash rate or is it not worth the risk?

Thx

[VRobb]

I'd vote for "not worth it"    Any small % increase in hashrate will cost even more in electricity due to non-linearity of power vs hashrate, and let's face it, S9's are running on the ragged edge already as is, right?  
Any dissenting opinions?
Oh, and Mine On!   Time for another patented kanopool blockalanche^tm! 

[mdefehr]

So we missed an entire difficulty level... The entire time network difficulty was 2603B (from Jan 22 to Feb 6) we did not find a block... Has that ever happened before?

I hate to say it, but we might be getting too small...  I can accept variance, but at what point is it too high?

[clgrissom3]

So we missed an entire difficulty level... The entire time network difficulty was 2603B (from Jan 22 to Feb 6) we did not find a block... Has that ever happened before?

I hate to say it, but we might be getting too small...  I can accept variance, but at what point is it too high?

The answer is "what ever fits into your comfort level", pure and simple.  I'm fine with it.

[Bink]

Sure seems to be concerted effort in some mainstream media to disparage BTC...interesting...

C'mon, blocks...gotta pay my hosting bill on the Ice Planet... 

I've had to slap down a few Wall Street Commentators re: Crypto.

Oddly enough, Toby Smith, Jonathan Hoenig and Charlie Gasparino remain my friends...

[nobitanh]

Is this the longest time ever that we can't hit a block, so long
Keep mining on...

[kano]

Is this the longest time ever that we can't hit a block, so long
Keep mining on...

Time? Nope - the first block ever found on the pool was pretty slow coz the pool was tiny.
It was also lucky (less than 100%)

However, Diff% is what matters for rewards, and this one is 542% at the moment.

The 2 largest are there on the Web site Blocks page at the end of October - the largest being 928.788%

Now for that CDF related number
0.99557285335217  542.000%  1 in 225.9
i.e. we expect to average, over time, 1 in 225.9 blocks to be over 542%

[Waztim]

Kano is spot on. It is just probabilities. Mine On, No Fear Here!! We will get our fair share. Come On Block!! MINE ON WITH KANO-SAN, the BEST BITCOIN MINING POOL ON EARTH!! BTCBTCBTC

[NomadGroup]

Help with fan speed on Antminer S9

I have 4 S9's that run smooth and you hardly ever hear the fans on any of them speed up or slow down.. (some with auot freq, some without)

I have another used S9 miner I am installing, everything is great, except the fan speeds up and slows down every 15 to 20 seconds, slow, fast, slow, fast..

Any thoughts or ideas on why this is happening and what I can do?

There was a post on bitcoin forum about editing the fan speed thru HTML and I tried that...set the fan speed to 70% (according to the kernel) and it is still doing it...

Really, really annoying...  There has to be a workaround somehow...  How can some do it and some not?

Looking for any thoughts or ideas that might help...

Thank You!

Mine On Dude!!

Try to change the controller for a new one, that should solve it.  

So are all the controller boards for S9's the same?  I see several listed on Ebay...

Is there any difference in the 13.5 board than any others or are they all the same?

Thanks

GH

They seem to be little different on some of my S9’s but if you purchase them on Aliexpress they are for all models, starting from 11.89TH and up to 14Th.  Here is a link for you my friend of a seller that I’ve personally purchased from several of these, twice.  All received within a week shipped by DHL, trusted seller. All worked perfect for me and I still have a couple left just in case for future problems.  . So I suggest you buy at least one extra so if something goes wrong with another miner you don’t have to wait a week next time.  Good investment since you don’t want for your workers to just sit for a week.

https://www.aliexpress.com/item/kuangcheng-s9-control-board-Applicable-to-ANTMINER-S9-14T-13-5T-13T-12-5T-12T-11/32828043453.html?spm=a2g0s.9042311.0.0.kbajsm

Although I’ve payed like $95 but that was several months ago, now they are like $125, still a good deal I think. Considering that the cheapest price for the unit is like $2300.  And you’ll have it running smoothly after.

Mine on buddy!  

[NomadGroup]

Is this the longest time ever that we can't hit a block, so long
Keep mining on...

Time? Nope - the first block ever found on the pool was pretty slow coz the pool was tiny.
It was also lucky (less than 100%)

However, Diff% is what matters for rewards, and this one is 542% at the moment.

The 2 largest are there on the Web site Blocks page at the end of October - the largest being 928.788%

Now for that CDF related number
0.99557285335217  542.000%  1 in 225.9
i.e. we expect to average, over time, 1 in 225.9 blocks to be over 542%

Usually it was like that, if a bunch of blocks found in a short period of time like it was the last month, after that we didn’t find blocks for a long time.  But 420 hours is getting kind of ridiculous to tell you the truth.  Did the difficulty jump another 20% or so?  I haven’t been keeping up with it lately. 

[mdefehr]

Perhaps a better question is (aside from when the pool was brand new) has variability ever been this high?  By my reckoning, a 100% block would take 2.8 days right now - not sure if that's the best way to measure variability, but it seems to work.

The trouble with high variability is that when we starting mining this block, network difficulty was at 2,227B - it has now gone up past 2,603B and is now at 2,874B and we still haven't found a block - I don't know how the math works on that, but it's got to mess with your profitability - intuition tells me that for everything to work out properly, we have to at least be finding some blocks at every difficulty level...

Is there any indication that variability will improve?  Are we doing anything to attract miners?

[Biffa]

Well we have gone from 32PH to 52PH in that time as well, which should help some.

[PPOC]

So we missed an entire difficulty level... The entire time network difficulty was 2603B (from Jan 22 to Feb 6) we did not find a block... Has that ever happened before?

I hate to say it, but we might be getting too small...  I can accept variance, but at what point is it too high?

The answer is "what ever fits into your comfort level", pure and simple.  I'm fine with it.

Been here for years, variance will be high with 50Ph, but I see the issue as lost fees, for a while we had crazy high transaction fees (3-9 BTC Fees) so not finding blocks during those times hurts overall rewards. In the end its always 100% but missing bocks at those crazy high fee times hurts...

Just saying....

[philosothink]

Sure seems to be concerted effort in some mainstream media to disparage BTC...interesting...

C'mon, blocks...gotta pay my hosting bill on the Ice Planet... 

I've had to slap down a few Wall Street Commentators re: Crypto.

Oddly enough, Toby Smith, Jonathan Hoenig and Charlie Gasparino remain my friends...

of course Wall Street Media is against crypto... it's taking their business model, and running off into the wild west of legality land.  Ponzi is as Ponzi does and if you can get away with it so be it.  They hate us.  we get to do what they do, without all the regs.

That said. This block is rough.  I suggest burnt offerings at the 420 hour for luck!

[mdefehr]

Didn't we used to sacrifice anime characters when blocks got long?  Maybe we need to go back to that...