Topic: ANTMINER S2 Discussion and Support Thread - page 30. (Read 355892 times)

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

Thnks all

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.

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.

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

I've seen others report this xxx000 thing before.

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

Thnks all

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!

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

bitmain s2 lcd monitor nothing to see and not put s2

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

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.

how install the sd tool
step by step details

the board had all the lights on