ANTMINER S2 Discussion and Support Thread - page 119.

buckrogers

legendary

Activity: 2746

Merit: 1181

Quote from: Questionator on April 29, 2014, 06:20:49 PM

I have a Antminer S2 from the second batch, it was all fine for a few day's after putting the blades back like most of you Undecided

Until today, i restarted the damn thing and now there is nothing but blue on the screen.
The original sd card seems to be fine, new msd card with a new image does not help.
I even tried with all the blades out, only one and half of them, still nothing Huh

Do you guy's know what could be wrong?

Yes i do...Bitmain is selling defective broken pieces of crap to people, and people are still buying them in hopes that it will work one day.
And he lowers his price every week so people think they are getting a deal, when all they are getting is a box of broken used parts, and a crappy OS interface.
He did well on the S1, and is using his success on that to sell this junk to people who think it will be as solid as an S1.

I guess if you are good at fixing broken parts and figuring out how to solder parts back together, then this would be the deal for you.
Just ahve a bunch of class 10 microSD cards handy for when the OS crashes.

Questionator

newbie

Activity: 14

Merit: 0

I have a Antminer S2 from the second batch, it was all fine for a few day's after putting the blades back like most of you Undecided

Until today, i restarted the damn thing and now there is nothing but blue on the screen.
The original sd card seems to be fine, new msd card with a new image does not help.
I even tried with all the blades out, only one and half of them, still nothing Huh

Do you guy's know what could be wrong?

smooth

legendary

Activity: 2968

Merit: 1198

I have several S2 $400 coupons and several 0.05 S1 coupons, and I doubt I will use any of them.

I will order miners for people using my coupons if you pay me in advance. No charge for the coupons but tips welcome.

mdopro1

sr. member

Activity: 308

Merit: 250

Double your Personal Bitcoin Funds.

One of my blades showing all ----- with a few ooo but no xxx Sad

What's going on there? It's the original PSU

EDIT: Is chain 1 on the far left side if I'm looking at the miner from front?

DevonMiner

sr. member

Activity: 471

Merit: 250

Well ... I received coupons like many others ... but I won't cash them in.

Loved the S1, but the horror stories on here meant I spent my money elsewhere.

Sorry Bitmain, but even if you get batch 4 right, many of us have been disappointed .. and walked ...

buckrogers

legendary

Activity: 2746

Merit: 1181

Quote from: mdopro1 on April 29, 2014, 02:40:18 PM

Am I supposed to take out this foam? Is it possibly going to catch fire if I don't?

P.S. Nothing's perfect, I got an Australian cord. Where would I find a heavy cord to run this thing?

Foam is fine to leave in.

Just buy a 15amp rated 120volt power cord and you'll be fine. They will look similar and thicker than the crappy 10amp computer monitor cables.

sbfree

sr. member

Activity: 336

Merit: 250

Quote from: klondike_bar on April 29, 2014, 02:32:26 PM

^mine arrived the exact same with the foam strips and good shape. also had 2 or 3 screws that were free-spinning that i pried out with a knife

3 out of 3 had the plastic sleeves and the foam on the case. 1 unit was still internally exploded and had to RMA 1 blade.

If they make the case internally stronger, and maybe some of that tape and/or foam they use when shipping printers then it will be good UNLIKE KNFLEE

ZiG

sr. member

Activity: 406

Merit: 250

Quote from: smooth on April 29, 2014, 02:52:56 PM

Quote from: ShopemNL on April 29, 2014, 01:56:29 PM

I got 20 S2 -400USD coupons and 20 S1 0.05btc coupons anybody intrested?

How does the coupons work? Are they transferrable?

Apply 1 coupon per device @ Checkout ...lowering the price to be paid... Wink

NON-transferable ...

smooth

legendary

Activity: 2968

Merit: 1198

Quote from: ShopemNL on April 29, 2014, 01:56:29 PM

I got 20 S2 -400USD coupons and 20 S1 0.05btc coupons anybody intrested?

How does the coupons work? Are they transferrable?

mdopro1

sr. member

Activity: 308

Merit: 250

Double your Personal Bitcoin Funds.

Am I supposed to take out this foam? Is it possibly going to catch fire if I don't?

P.S. Nothing's perfect, I got an Australian cord. Where would I find a heavy cord to run this thing?

thomashrev89

full member

Activity: 190

Merit: 100

Quote from: CroverNo01 on April 29, 2014, 02:27:47 PM

Quote from: mdopro1 on April 29, 2014, 02:03:11 PM

This rubber padding might have something to do with my miner coming in 1 piece.

Thanks for the update, I would still prefer to have my blades shipped all together in single boxes. I don't mind building also saves time at Bitmain end.

Could this be a possible option on the website ? would any other users agree ?

Not sure if Bitmain would take a group of concerns on board rather than just a few users so should take a count or a vote ?

At the end of the day it saves them hassle with RMA and pissed off customer if they just ship it how the customer asks.

Yes, packaging the cards by themself would be my choice.

klondike_bar

legendary

Activity: 2128

Merit: 1005

ASIC Wannabe

^mine arrived the exact same with the foam strips and good shape. also had 2 or 3 screws that were free-spinning that i pried out with a knife

CroverNo01

sr. member

Activity: 588

Merit: 269

Quote from: mdopro1 on April 29, 2014, 02:03:11 PM

This rubber padding might have something to do with my miner coming in 1 piece.

Thanks for the update, I would still prefer to have my blades shipped all together in single boxes. I don't mind building also saves time at Bitmain end.

Could this be a possible option on the website ? would any other users agree ?

Not sure if Bitmain would take a group of concerns on board rather than just a few users so should take a count or a vote ?

At the end of the day it saves them hassle with RMA and pissed off customer if they just ship it how the customer asks.

mdopro1

sr. member

Activity: 308

Merit: 250

Double your Personal Bitcoin Funds.

I got my miner today and except 3 free spinning screws that I had to break everything inside was in perfect shape. I might know why too. See pictures below.

This rubber padding might have something to do with my miner coming in 1 piece.

ShopemNL

legendary

Activity: 1025

Merit: 1001

I got 20 S2 -400USD coupons and 20 S1 0.05btc coupons anybody intrested?

klondike_bar

legendary

Activity: 2128

Merit: 1005

ASIC Wannabe

Quote from: philipma1957 on April 29, 2014, 12:55:20 PM

Quote from: klondike_bar on April 29, 2014, 12:19:29 PM

newly added: 6206 = 215.625MHz

for some reason my system was a bit unstable at 218.75MHz. it had ~2.02% hw errors, but something was causing either the miner or the psu to switch off and need a reboot. (the PSU is a modified DPS2000 so it should be plenty powerful, but the cooling fan i stuck to it might not have been sufficient)
212.5MHz gives ~0.75% errors, so hopefully the middle-step at 215.6 will be around 1.1% errors and more stable.

Been 30 years since I did this math. I am playing around with a lot of s-1's

does anyone have a link to a bigger more expanded chart.
Say from freq 175 to freq 425.
Freq
175

I am going to post a thread in support. Asking for people to fill in the gaps
[/quote]

not much reason for such a range, since most of it is a mixture of hand calculations and a logic puzzle (last digit as '2' means twice half the frequancy as if using '1' and 4x as using '0')

the ranges to focus on are: S1: 300-400MHz S2: 196-225MHz if you want a frequency outside that range you basically need to do the calculation with the end-frequency in mind. If you have a U1 it makes an excellent test-bench since it runs at a very similar voltage and frequency range as the S2.

philipma1957

legendary

Activity: 4256

Merit: 8551

'The right to privacy matters'

Quote from: klondike_bar on April 29, 2014, 12:19:29 PM

Quote from: klondike_bar on April 26, 2014, 12:13:08 PM

Quote from: FortuneNVirtue on January 16, 2014, 12:39:56 PM

It comes from the Antminer U1 overclock manual. But I think this should be compatible to Antminer S1, too.

Let's see the example of why 0780 and 4F81 are 400MHz.

HEX BINARY 15/BS M N OD
0780 0000 0111 1000 0000 00 00 0111 1 = 15 000 00 = 0 00 = 0 which NO=1
4F81 0100 1111 1000 0001 01 00 1111 1 = 31 000 00 = 0 01 = 1 which NO=2
5F82 0101 1111 1000 0010 01 01 1111 1 = 63 000 00 = 0 10 = 2 which NO=4

Fout = 25 * (M+1) / ((N+1)*NO)

Fout(0780) = 25 * (15+1) / (1*1) = (25*16)/1 = 400 MHz
Fout(4F81) = 25 * (31+1) / (1*2) = (25*32)/2 = 400 MHz
Fout(5F82) = 25 * (63+1) / (1*4) = (25*64)/4 = 400 MHz

Actually, 5F82 is also 400 MHz, but due to the instruction below 500 <= Fout * NO <=1000
Fout(5F82) = 400MHz, therefore, Fout*4 = 1600 and over 1000.

So I think I should not config 5F82 for 400MHz, according to this manual.
I don't say that it does not work (I tried it before understanding the HEX, it worked)
but you have also another 2 freq_values which give you the same MHz and get along with the instruction in the manual.

A little bit too long, anyway, I hope you enjoy my lecture, lol.

Any questions are welcome.

If this is useful, any donations/tips are welcome => 12QAQhbmTzV7sJ9sg8xT96JAneE4S89sS6 Grin

I finally got around to doing the calculations myself for the antminer S2 - and so far it looks good (testbench was a U1, which on success menat the code could be applied to the S2 safely)

5002 = 206.25MHz
5082 = 212.50MHz
6206 = 215.625MHz
5102 = 218.75MHz

all three meet the requirements stipulated by the above rules and pattern.

5082 is currently giving a hashrate of 1095GH and error rate of about 0.95% after 15minutes. (212.5 is 8.5% higher than the stock speed)

tips accepted at 1LQZnkJuUbdeVdxGjR27zkNJWSW4FSLBhh

newly added: 6206 = 215.625MHz

for some reason my system was a bit unstable at 218.75MHz. it had ~2.02% hw errors, but something was causing either the miner or the psu to switch off and need a reboot. (the PSU is a modified DPS2000 so it should be plenty powerful, but the cooling fan i stuck to it might not have been sufficient)
212.5MHz gives ~0.75% errors, so hopefully the middle-step at 215.6 will be around 1.1% errors and more stable.

Been 30 years since I did this math. I am playing around with a lot of s-1's

does anyone have a link to a bigger more expanded chart.
Say from freq 175 to freq 425.
Freq
175

I am going to post a thread in support. Asking for people to fill in the gaps

googlemaster1

sr. member

Activity: 280

Merit: 250

Yeah, I have 10x coupons, so I'd sell them for like .1 a piece.

That said, I think I am going to wait a couple days. Bitcoin looks like its in a little uptrend, and I rather purchase it for 4.x BTC than 5.x btc. The difference might not be much in $, but I count my ROI in BTC.

Biffa

legendary

Activity: 3234

Merit: 1220

Quote from: klondike_bar on April 29, 2014, 12:33:13 PM

Quote from: Biffa on April 29, 2014, 12:30:48 PM

Quote from: conderus on April 29, 2014, 12:28:58 PM

Hello

Have got this S2 CE certificate,and what is very significant,CE mark on the case (in visible place) ?

I don't think they do.

no markings on the case, and nothing on the control board or hashing boards. Its unlikely anything is printed on the backplane either

Nothing on the external box either.

klondike_bar

legendary

Activity: 2128

Merit: 1005

ASIC Wannabe

Quote from: Biffa on April 29, 2014, 12:30:48 PM

Quote from: conderus on April 29, 2014, 12:28:58 PM

Hello

Have got this S2 CE certificate,and what is very significant,CE mark on the case (in visible place) ?

I don't think they do.

no markings on the case, and nothing on the control board or hashing boards. Its unlikely anything is printed on the backplane either

Topic: ANTMINER S2 Discussion and Support Thread - page 119. (Read 355820 times)