ANTMINER S2 Discussion and Support Thread - page 93.

TracerX

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Quote from: basil3legs on May 16, 2014, 02:23:23 PM

I returned home earlier to find the power off - the meter ran out!

My S2 wouldn't restart (I did turn the switch off before putting the power back on!), just the blue screen and the fans spinning.

Stole an 8GB Micro SD card from my kids MP3 player (oops!) and installed the software on it.

Now back up and running :-)

Simple - although it took ages to find a Micro SD card!! I did back up all his songs (there weren't many on it) first and have ordered a replacement for him off ebay.

Now rewriting the image to the original 2GB SD card hopefully as a spare.

So basically it doesn't even need to be a power surge, just a break in the power can corrupt the SD so I guess even turning the machine off from it's switch could as well. Is there a safer way?

Thanks to those on here for the downloadable and the instructions/links, which were on page 86 of this thread.

SSH into the box and issue the "shutdown -h now" command at the prompt before flipping the switch on the PSU. I've power cycled my S2 a millionty times this way with zero corruption.

SSH user is root, and the password is admin. You can use PuTTY in windows (for free) or the terminal in OSX or Linux with the "ssh [email protected]" to connect.

basil3legs

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I returned home earlier to find the power off - the meter ran out!

My S2 wouldn't restart (I did turn the switch off before putting the power back on!), just the blue screen and the fans spinning.

Stole an 8GB Micro SD card from my kids MP3 player (oops!) and installed the software on it.

Now back up and running :-)

Simple - although it took ages to find a Micro SD card!! I did back up all his songs (there weren't many on it) first and have ordered a replacement for him off ebay.

Now rewriting the image to the original 2GB SD card hopefully as a spare.

So basically it doesn't even need to be a power surge, just a break in the power can corrupt the SD so I guess even turning the machine off from it's switch could as well. Is there a safer way?

Thanks to those on here for the downloadable and the instructions/links, which were on page 86 of this thread.

Reapor

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My S2 stopped working sometime in the middle of the night. I've had only minimal time to look at it thus far. I was told that it had started beeping and then was power cycled. When I arrived fans were on high as they are during initial power cycle, LCD screen was blue without any readout.

Anyone has an idea on what's going on? I only had enough time to get the cover off and checked board + connections. I wasn't able to login as the IP didn't show up on the network.

I pulled out the micoSD to inspect later tonight. Are these symptoms similar to those of people who have had microSD cards corrupting? It's a batch 2 unit and this is the first problem I've encountered.

Thx for any insight.

wpgdeez

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Quote from: s1gs3gv on May 16, 2014, 01:52:56 PM

Quote from: wpgdeez on May 16, 2014, 12:54:01 PM

Bitmain, now that you are online can you please let us know why caps need to be soldered to S2 blades. Do all S2's need to have this done and if it isn't done what are the repercussions?

Is this a suitable part ? Its 820 uf, 2.5v, 20%

http://www.mouser.com/ProductDetail/Nichicon/RL80E821MDN1/?qs=sGAEpiMZZMsIwzbKW1rlgUIs0B55SsapP56UQKtTY5k%3d

Any info from Bitmain about this would be greatly appreciated. There is obviously a problem, let your customers know so they can make an informed decision.

s1gs3gv

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ex uno plures

Quote from: wpgdeez on May 16, 2014, 12:54:01 PM

Bitmain, now that you are online can you please let us know why caps need to be soldered to S2 blades. Do all S2's need to have this done and if it isn't done what are the repercussions?

Is this a suitable part ? Its 820 uf, 2.5v, 20%

http://www.mouser.com/ProductDetail/Nichicon/RL80E821MDN1/?qs=sGAEpiMZZMsIwzbKW1rlgUIs0B55SsapP56UQKtTY5k%3d

wpgdeez

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Quote from: BITMAIN on May 16, 2014, 12:45:20 PM

New price for AntMiner S2 1 TH/s Miner Batch 4: 2319 USD each one, shipping cost included.

Bitmain, now that you are online can you please let us know why caps need to be soldered to S2 blades. Do all S2's need to have this done and if it isn't done what are the repercussions?

BITMAIN

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https://www.bitmain.com

New price for AntMiner S2 1 TH/s Miner Batch 4: 2319 USD each one, shipping cost included.

s1gs3gv

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ex uno plures

Quote from: digitizing on May 16, 2014, 02:51:22 AM

"Computer Game Gateway" ?

I thought that was a very apt and insightful description of a bitcoin miner !

SockMunkee

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I have still have 5 S2 coupons and 5 S1 coupons available for donation.

Just PM me here!

Thanks,

~Girard

wpgdeez

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Quote from: wpgdeez on May 15, 2014, 10:51:16 PM

Quote from: dalenorman2005 on May 15, 2014, 09:29:01 PM

Am I the only one who's noticed the new PDF on Bitmaintech's website with step-by-step instructions on how to solder capacitors directly to each hashing board....

"Guideline for soldering Capacitors to S2 hash board to fix chip disabling issue"

eek.... happy long weekend to me...

That sucks Sad

.
Factory defect on this batch or engineering oversight? How many blades are in an S2? 4 caps per blade need to be added if I understand correct?

This has scared me away from buying a S2 until Bitmaintech can comment on what the actual problem is.

digitizing

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how much the price declared by bitmain for custom purpose ?
and what is the description ?
is it still like S1 which is "Computer Game Gateway" ?

dropt

legendary

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Quote from: ?? on ??

so according to this formula;

my 1000w S2 divided by 230V = 4.347A

or more accurately 1040W / 230V = 4.521A

so 1040W / 240V = 4.333A

three different Amp readings from 1 S2 using different Voltage...

That's pretty much how math works there buds.

gurki

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Quote from: dalenorman2005 on May 15, 2014, 09:46:38 PM

One S2 draws about 1000 watts, so 1000w / 115 volts = 8.7 amps. So yes, a single 15 amp circuit can run one S2, but be careful what else is on that circuit... most household circuits have other outlets on them.

208v is better. 240 is better still. the closer to 250v, the better, i believe.

Thanks alot!

dropt

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Quote from: mark978 on May 15, 2014, 11:24:22 PM

Maybe half the chips are disabled, and this + a 2nd PSU is part of bitmains post about being able to OC each S2 to 1.8-2Thash cheaply?

No.

mark978

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Quote from: wpgdeez on May 15, 2014, 10:51:16 PM

Quote from: dalenorman2005 on May 15, 2014, 09:29:01 PM

Am I the only one who's noticed the new PDF on Bitmaintech's website with step-by-step instructions on how to solder capacitors directly to each hashing board....

"Guideline for soldering Capacitors to S2 hash board to fix chip disabling issue"

eek.... happy long weekend to me...

That sucks Sad

.
Factory defect on this batch or engineering oversight? How many blades are in an S2? 4 caps per blade need to be added if I understand correct?

Maybe half the chips are disabled, and this + a 2nd PSU is part of bitmains post about being able to OC each S2 to 1.8-2Thash cheaply?

wpgdeez

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Activity: 728

Merit: 500

Quote from: dalenorman2005 on May 15, 2014, 09:29:01 PM

Am I the only one who's noticed the new PDF on Bitmaintech's website with step-by-step instructions on how to solder capacitors directly to each hashing board....

"Guideline for soldering Capacitors to S2 hash board to fix chip disabling issue"

eek.... happy long weekend to me...

That sucks Sad

.
Factory defect on this batch or engineering oversight? How many blades are in an S2? 4 caps per blade need to be added if I understand correct?

wpgdeez

hero member

Activity: 728

Merit: 500

Quote from: ?? on ??

Quote from: dalenorman2005 on May 15, 2014, 09:46:38 PM

One S2 draws about 1000 watts, so 1000w / 115 volts = 8.7 amps. So yes, a single 15 amp circuit can run one S2, but be careful what else is on that circuit... most household circuits have other outlets on them.

208v is better. 240 is better still. the closer to 250v, the better, i believe.

my power is 220-240 i assume these are volts.

i often wonder how to get the Amps of an item.

is it watts x volts = amps or something similar?

i worked out on my fuseboard what each fuse could manage Watts wise, and so far ive not had any electrical concerns but the Amps of any given unit seems to confuse me...such that i feel its more a guesstimate than a calculation...

Volts X Amps = Watts

240v x 10 amp = 2400 watts

TracerX

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Quote from: dalenorman2005 on May 15, 2014, 09:29:01 PM

Am I the only one who's noticed the new PDF on Bitmaintech's website with step-by-step instructions on how to solder capacitors directly to each hashing board....

"Guideline for soldering Capacitors to S2 hash board to fix chip disabling issue"

eek.... happy long weekend to me...

Me too, maybe. I've got a half board of x's.

TracerX

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Activity: 918

Merit: 1002

Quote from: mdude77 on May 15, 2014, 09:52:11 PM

What does this mean on a chain? never saw a dash before.

oooooooo oooooooo oooooooo oooooooo oooo-ooo oooooooo oooooooo oooooooo

It's chain 2. Is that from the top, near the PSU, or from the bottom?

M

Chain two is second farthest from the PSU. #10 is closest to the PSU, #1 farthest away.

Edit: The dash is probably okay, it'll more than likely clear when you reboot the device or restart cgminer (i.e. when you Save and Apply mining configurations).

mdude77

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What does this mean on a chain? never saw a dash before.

oooooooo oooooooo oooooooo oooooooo oooo-ooo oooooooo oooooooo oooooooo

It's chain 2. Is that from the top, near the PSU, or from the bottom?

M

Topic: ANTMINER S2 Discussion and Support Thread - page 93. (Read 355842 times)