ANTMINER S4 Discussion and Support Thread

[dogie]

More S1 upgrade kits please!!

you could feasibly use the C1 as a pair of upgrade kits, but its not ideal. Not sure why bitmain isnt selling upgrade kits for ~0.3BTC/kit

How many people would be interested in another S1 upgrade kit batch?

I would be interested in about 150pcs of S1 upgrade kits, but only at price I couldnt resist.

And what is that price?

[dogie]

Anyone experience boards going ------------- halfway during hashing?

I have a miner that would hash fine for a few hours and then show 1.5 TH.

Temps are low. Upon restarting cgminer, it would show one set of hashboards going --------

After multiple reboots I'll get all 0000000 again and hash at full speed but at times, it will go to 1.5 TH again.

I ahve two miners acting like this.

Also the reboot function via the GUI doesn't seem to work and 'hangs' my antminer requiring a cold reboot.

Soft reset won't cure those issues on S4, need to do a power off and on again. Its just a known issue unfortunately

[sEpuLchEr]

Anyone experience boards going ------------- halfway during hashing?

I have a miner that would hash fine for a few hours and then show 1.5 TH.

Temps are low. Upon restarting cgminer, it would show one set of hashboards going --------

After multiple reboots I'll get all 0000000 again and hash at full speed but at times, it will go to 1.5 TH again.

I ahve two miners acting like this.

Also the reboot function via the GUI doesn't seem to work and 'hangs' my antminer requiring a cold reboot.

Soft reset won't cure those issues on S4, need to do a power off and on again. Its just a known issue unfortunately

Got that problem when I first got the S4. A whole chain would go offline every now and then. But after running in, that problem never came back. I also changed the power cable to one with a larger guage so maybe that will help.

[sEpuLchEr]

Also, wondering if anyone has any idea on how to soundproof or at least muffle the S4 without restricting any airflow? Where I'm sitting, I'm getting about 90 decibels, well, at least that's what my iphone4 says. And wearing earplugs every min of my waking hours for the rest of my life doesn't seem to be the solution. LOL!

Oh, and I don't have spare cash for a soundproof server rack or even a server rack so... I just kinda need some DIY fix.

[dogie]

Also, wondering if anyone has any idea on how to soundproof or at least muffle the S4 without restricting any airflow? Where I'm sitting, I'm getting about 90 decibels, well, at least that's what my iphone4 says. And wearing earplugs every min of my waking hours for the rest of my life doesn't seem to be the solution. LOL!

Oh, and I don't have spare cash for a soundproof server rack or even a server rack so... I just kinda need some DIY fix.

Its not 90 dba, early 70s. Isn't a fix unless you can get it really cool air (or hack the firmware to reduce fan noise).

[sEpuLchEr]

Its not 90 dba, early 70s. Isn't a fix unless you can get it really cool air (or hack the firmware to reduce fan noise).

This one says it's 90. LOL

http://prntscr.com/5c1ht9

[dogie]

Its not 90 dba, early 70s. Isn't a fix unless you can get it really cool air (or hack the firmware to reduce fan noise).

This one says it's 90. LOL

http://prntscr.com/5c1ht9

At 1m I get 72 on both my professional meter and my phone for a max RPM S4. If you're getting 90 then you're ramming it into the fan and the airstream which is wrong.

[sEpuLchEr]

At 1m I get 72 on both my professional meter and my phone for a max RPM S4. If you're getting 90 then you're ramming it into the fan and the airstream which is wrong.

I'm about a 1.5 metres away. Iphone on my desk with mic facing the S4. I have 3 of them running at close to max fan rpm between 3960-4200. Also, I'm in a rather small home office, so might be the reason too. Can't turn the fan down unless I can get cool air. This is as cool as it can get indoors without the air conditional. I can't turn it on anyway, as it can't keep up even though it's 12000 BTU.

Edit: Oh and with the huminity levels here in Singapore, evaporative cooling doesn't work.

[sEpuLchEr]

Dogie,

Just thought maybe you could get bitmain to update their page with regards to S4 power cords. If running 220/240v, 10amp cable, 110/120v 15/16amp cable (fused at whatever your circuit is running). There are alot of cables on ebay and amazon that are rated 5amp and fused at 5amp or 10amp fused at 5amp... It's not going to work with the S4 regardless of your running voltage.

[dmwardjr]

Also, wondering if anyone has any idea on how to soundproof or at least muffle the S4 without restricting any airflow? Where I'm sitting, I'm getting about 90 decibels, well, at least that's what my iphone4 says. And wearing earplugs every min of my waking hours for the rest of my life doesn't seem to be the solution. LOL!

Oh, and I don't have spare cash for a soundproof server rack or even a server rack so... I just kinda need some DIY fix.

Hi Singapore,

You can build your own, buddy!

For a fraction of the cost you can build your own.  You can have grills on the front and the rear.  Surround the 2" x 4" frame with ply-wood.  Cut squares into the front and backs of the ply-wood to allow the grills to be screwed into place to allow for air flow.  I've provided some links to Amazon for parts.

Here is a video towards the build of your rack posted on youtube:  https://www.youtube.com/watch?v=Fr_Ce0tBGGg

The amazon link is to a name brand of rails to purchase.  If that length is not preferred, search THE SAME BRAND rails on amazon to view other lengths.

http://www.amazon.com/gp/product/B0006MZN2W/ref=ox_sc_sfl_title_7?ie=UTF8&psc=1&smid=A27SZNK1JQQPHY



http://www.amazon.com/Truaire-C170-16X16-Measurements-Sidewall/dp/B0044G0ZKG/ref=sr_1_cc_1?s=aps&ie=UTF8&qid=1417442568&sr=1-1-catcorr&keywords=16+x+16+return+air+grille



http://www.amazon.com/Hart-Cooley-673-30x16-Sidewall/dp/B00BMZDKI6/ref=sr_1_cc_2?s=aps&ie=UTF8&qid=1417442695&sr=1-2-catcorr&keywords=16+x+30+return+air+grille

[NotFuzzyWarm]

At 1m I get 72 on both my professional meter and my phone for a max RPM S4. If you're getting 90 then you're ramming it into the fan and the airstream which is wrong.

I'm about a 1.5 metres away. Iphone on my desk with mic facing the S4. I have 3 of them running at close to max fan rpm between 3960-4200. Also, I'm in a rather small home office, so might be the reason too. Can't turn the fan down unless I can get cool air. This is as cool as it can get indoors without the air conditional. I can't turn it on anyway, as it can't keep up even though it's 12000 BTU.

Edit: Oh and with the huminity levels here in Singapore, evaporative cooling doesn't work.

12kBTU = 3.5kw heat load and is only barely good for 2 s4's. When it comes to cooling miners forget window A/C units. The math:
BTU/hr=Watts x 3.4129
1 Tonne=12,000 BTU/hr

[sEpuLchEr]

Thank you both. 

[dmwardjr]

Thank you both. 

Sure... no problem... you will also need hinges for the vented front door and vented rear door.  A small hole would need to be cut to allow power cords.

[dogie]

Dogie,

Just thought maybe you could get bitmain to update their page with regards to S4 power cords. If running 220/240v, 10amp cable, 110/120v 15/16amp cable (fused at whatever your circuit is running). There are alot of cables on ebay and amazon that are rated 5amp and fused at 5amp or 10amp fused at 5amp... It's not going to work with the S4 regardless of your running voltage.

I don't think what is listed is a problem.

[sEpuLchEr]

I don't think what is listed is a problem.

It is... in some countries at least. For eg. You won't be able to find 16A power cables here in Singapore. 

[dmwardjr]

I don't think what is listed is a problem.

It is... in some countries at least. For eg. You won't be able to find 16A power cables here in Singapore.  

Nor in the US.

However, on a 240 Volt circuit, 1400 watts is 5.8 amps.  On a 120 Volt circuit, it is 11.6 amps.  

The 15 amp cords are sufficient for 120 Volt circuit and the 10 amp cords are sufficient for the 240 Volt circuits.

[Cassey]

Believe what they wanted to say was 16 AWG wire, not 16 amp?

[dmwardjr]

Believe what they wanted to say was 16 AWG wire, not 16 amp?

I believe the same.

[sEpuLchEr]

Believe what they wanted to say was 16 AWG wire, not 16 amp?

I believe the same.

That's a lot of difference. LOL. But come to think of it, does make sense...

Dogie.. make them spell it out in full 

[macgyver007]

Im wondering if this fire sale on S4 has anything to do with the overvolting of board 3 which causes 5c higher temps on all units and as another forum member discovered is using .075v which is well over the .0725 voltage spec for the machine...and still no answer from bitmain on this matter.. but the voltage consumption spec has changed from the original .69   ironic how the seemingly important things get swept under the carpet with free shipping....
*earplugs not included*

-----------------Some S4's have J7 Chain1 Voltage Problem-----------------

Working progress........
i did sniff S4 data exchange and i have some ideas for that.
on J7 connector Tx pin connected to the FPGA. This Tx pin didnt tell to pic12F1822 voltage parameters on boot. tell only bulk data
you can see on my pics. data is 192, @, 128, 0 (it cant be true) consistently followed until controller giving hash work. That is not clean TX data on the boot and i2c is missing. You can see others I2C data for 4 buck controller on each hash board from pic mcu. So i cant find electronic problem. it seems to be FPGA program timing failure or beagleboneblack software problem. (read browser header for picture names)
and this i2c data for 0680 Volt configuration you seen.





Well, i dont buy S4 again...
poor assembly(weak screws),
used devices(lot of dust in fans when it come)
lots of technical problems(blowed psus,some hash boards showing wrong temperature,J7 Voltage problem...)
noisy device
i can say alot etc..