ANTMINER S2 Discussion and Support Thread - page 30.

freebit13

hero member

Activity: 616

Merit: 500

I got Satoshi's avatar!

Quote from: sepehr on June 28, 2014, 11:29:10 PM

We have received an S2 Antminer yesterday.
The 1000W Enermax PSU of Antminer was not working at all from the start!
So we have no way just to replace it.
We have replaced it with an EVGA G2 1000W 80 Plus Gold PSU and now the unit running!

Here is the pics:

http://forgeco.in/images/powerreplace1.jpg
http://forgeco.in/images/powerreplace2.jpg

I hope that Bitmain cover our costs and the headaches to find the problem!

Bitmain will replace your PSU, just ask them for a shipping label and send it back and they will send a replacement. Lucky you had a replacement PSU to keep you hashing in the meantime.

freebit13

hero member

Activity: 616

Merit: 500

I got Satoshi's avatar!

Quote from: Biodom on June 29, 2014, 07:54:34 PM

Quote from: MoreBloodWine on June 29, 2014, 07:47:34 PM

If not paste, why / how would swapping bays with another blade help ?

I've seen others report this xxx000 thing before.

I don't know exactly why, but it does-I had exactly the same problem and this is what fixed it.
Boards are not exactly the same size, so, I guess, they fit better in different places on the control board.

My guess is that it's software related, the system doesn't seem very stable.

freebit13

hero member

Activity: 616

Merit: 500

I got Satoshi's avatar!

Believe it or not, I have fixed this by simply ejecting the SD card while the machine is running, switching the machine off, re-inserting the same card and starting up again and it worked. It doesn't always require a re-imaging of the card and is worth a try first as it's quicker

Quote from: TracerX on June 29, 2014, 11:23:49 AM

Quote from: jelin1984 on June 29, 2014, 11:01:08 AM

i had see someone to tell to put in and put out the sd card
untill the board start again boot
but i do not remebe very well the steps any details
please

Quote from: ?? on ??

After having no setup issues and running great for the last couple of weeks, I woke up this morning to find my batch 1 AntMiner S2 not hashing, fans going full speed, panel dim and the red light solid. Recalling that others here have had the same issue, I went back and skimmed over the previous posts and found that the likely issue was probably a corrupt SD card. That was indeed the case, as I am now back up and running, and I figure the problem started when a brief power outage occurred here this morning. Thought I would briefly summarize what I did to recover, which may be of special interest to those folks using a Mac to write to their SD cards:

- ran to the store and bought a 4gb Sandisk microSD card. They didn't have any class 10 cards, only class 4, but it seems to work (ordered a couple class 10s from Amazon for backup).
- Downloaded onto my MacBook the latest firmware from the bitmaintech website, as well as the SD card image from https://dl.dropboxusercontent.com/u/16075357/bitmain.img.zip (thanks 1l1l11ll1l)
- put the new microSD card in the adapter, shoved it into my MacBook, read through the guide at http://elinux.org/RPi_Easy_SD_Card_Setup, and then ran these commands in Terminal:
cd Desktop (my bitmain.img was on the desktop)
diskutil list (to find the disk name of SD card, mine was disk2, so replace disk2 below with what yours is)
diskutil unmountDisk /dev/disk2
sudo dd bs=1m if=bitmain.img of=/dev/disk2 (this took 30 minutes to complete)
- once SD card was ready, I opened up the AntMiner, pulled out the BeagleBone card, swapped SD cards and reassembled
- powered up, and it started hashing again. Connected to the miner from the browser, uploaded the latest firmware, changed to point to my pool, and everything was golden.

Much thanks to all of previous posters that talked about this issue, as your help got me back up in hours as opposed to days.

digitizing

member

Activity: 108

Merit: 10

beware if your country ask high tax for import.
because bitmain now declare the price as much as you pay.
they wont under vaule the price for custom purpose even if you ask.

tazdas

member

Activity: 73

Merit: 10

Quote from: NorTiaN on June 29, 2014, 07:24:36 PM

Lo all fellow bitmainers.
Need a couple S2 coupons pls.
Will tip! Name is the same as here.

Thnks all

I need one coupon as well.. my only S2 is having issues booting up, most likely its the beagle board as I cant get it to boot ..no blue light or any light on the network port .. tried couple of SD cards and flashed them .. still no luck

MoreBloodWine

legendary

Activity: 1064

Merit: 1001

But the fact still remains, AFAIK, not having a clear cause for the problem. Plenty of speculation, most starting with the PSU.

philipma1957

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Merit: 8551

'The right to privacy matters'

Quote from: MoreBloodWine on June 29, 2014, 08:14:06 PM

Quote from: navigator on June 29, 2014, 08:11:50 PM

So, my S2 I got recently hasn't been running smoothly. After some testing and experimenting it now runs stable with 9 blades. With 10 blades I could get it to run about 12hrs at 1th before it started dropping hashrate. If I then restarted the miner process some blades would show up as bad or with x's and I would only be getting 700gh+. With 9 blades, it's running smoothly at 900gh/s for 24hrs+. The one card I removed has only a faulty temp sensor. Does anyone know where it's located on the blade? Or is it inside the chips?

I think the PSU is the problem but don't know 100% yet.

That 100Gh loss is gonna suck for people with say like 10 of these and 4 blades removed with 4 weirded out machines. Although, if you got 10 of these and 4 are having issues then I'd start looking at Bitmain.

frankly I never purchased one ,but based on hundreds of posts I would say run 9 blades. In the long run it may be better.

1) less hardware errors
2) it will run longer without dying
3) you could sell a blade as a repalcement on ebay
4) you kind of need cheap power or better btc usd price to make out.------------if you get this having the machine run trouble free on 9 blades for 5 months vs crashing and burning on 10 blades after 3 months may be the better choice.

MoreBloodWine

legendary

Activity: 1064

Merit: 1001

Quote from: navigator on June 29, 2014, 08:11:50 PM

So, my S2 I got recently hasn't been running smoothly. After some testing and experimenting it now runs stable with 9 blades. With 10 blades I could get it to run about 12hrs at 1th before it started dropping hashrate. If I then restarted the miner process some blades would show up as bad or with x's and I would only be getting 700gh+. With 9 blades, it's running smoothly at 900gh/s for 24hrs+. The one card I removed has only a faulty temp sensor. Does anyone know where it's located on the blade? Or is it inside the chips?

I think the PSU is the problem but don't know 100% yet.

That 100Gh loss is gonna suck for people with say like 10 of these and 4 blades removed with 4 weirded out machines. Although, if you got 10 of these and 4 are having issues then I'd start looking at Bitmain.

navigator

sr. member

Activity: 362

Merit: 250

So, my S2 I got recently hasn't been running smoothly. After some testing and experimenting it now runs stable with 9 blades. With 10 blades I could get it to run about 12hrs at 1th before it started dropping hashrate. If I then restarted the miner process some blades would show up as bad or with x's and I would only be getting 700gh+. With 9 blades, it's running smoothly at 900gh/s for 24hrs+. The one card I removed has only a faulty temp sensor. Does anyone know where it's located on the blade? Or is it inside the chips?

I think the PSU is the problem but don't know 100% yet.

Biodom

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Activity: 3892

Merit: 4331

Quote from: MoreBloodWine on June 29, 2014, 07:47:34 PM

If not paste, why / how would swapping bays with another blade help ?

I've seen others report this xxx000 thing before.

I don't know exactly why, but it does-I had exactly the same problem and this is what fixed it.
Boards are not exactly the same size, so, I guess, they fit better in different places on the control board.

MoreBloodWine

legendary

Activity: 1064

Merit: 1001

If not paste, why / how would swapping bays with another blade help ?

I've seen others report this xxx000 thing before.

Biodom

legendary

Activity: 3892

Merit: 4331

Quote from: NorTiaN on June 29, 2014, 07:39:59 PM

It has been running great for many days and now all of a sudden this!
How can it be fixed?

Thnks all

Take this board out and examine it visually. Could be an excess of grey thermal paste at the bottom-remove using Q-tip 'technology".
If not, exchange the position with another board while making sure it is pushed into the slot all the way.

NorTiaN

member

Activity: 97

Merit: 10

It has been running great for many days and now all of a sudden this!
How can it be fixed?

Thnks all

NorTiaN

member

Activity: 97

Merit: 10

Lo all fellow bitmainers.
Need a couple S2 coupons pls.
Will tip! Name is the same as here.

Thnks all

MoreBloodWine

legendary

Activity: 1064

Merit: 1001

Still need some S2 coupons, please PM me with what you got... Ty.

sepehr

sr. member

Activity: 399

Merit: 250

Cryptocurrency Evangelist

Quote from: sepehr on June 28, 2014, 11:29:10 PM

We have received an S2 Antminer yesterday.
The 1000W Enermax PSU of Antminer was not working at all from the start!
So we have no way just to replace it.
We have replaced it with an EVGA G2 1000W 80 Plus Gold PSU and now the unit running!

Here is the pics:

I hope that Bitmain cover our costs and the headaches to find the problem!

Swimmer63

legendary

Activity: 1593

Merit: 1004

Sent you a PM for a quote on hosting. I'm local.

graymatter

member

Activity: 98

Merit: 13

I have 2 hosted S2s for sale. Details below.

https://bitcointalksearch.org/topic/wts-2x-hosted-antminer-s2-upgraded-overclocked-668539

Swimmer63

legendary

Activity: 1593

Merit: 1004

Quote from: MoreBloodWine on June 28, 2014, 11:54:50 PM

Is it me or does that one blade in your image not have any sort of heat sink on it ?

Also, still looking for five (5) S2 coupons that don't expire for at least a week or longer, just PM me with what you got... will make a sum total 0.4 donation for all.

Edit: My BitMain name is the same as my name here, MoreBloodWine

Center blade is not a miner. It's the controller or something. There are 5 hashing blades on each side of it.

DotSauce

newbie

Activity: 60

Merit: 0

Quote from: jelin1984 on June 29, 2014, 10:55:46 AM

bitmain s2 lcd monitor nothing to see and not put s2

Sometimes the LCD does not work, but the S2 hashboards will still work fine. If it is running, try connecting to it at 192.168.1.99 and see if it is working. I have two units with no working LCD but they are running fine.

Topic: ANTMINER S2 Discussion and Support Thread - page 30. (Read 355797 times)