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Author Topic: ANTMINER S4 Discussion and Support Thread  (Read 294745 times)
dogie
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October 15, 2014, 06:36:13 AM
 #821


Oh noes.... you fcking did not..... i would fcking crush you little piece of shit

By "investment fund", should i say ,..... " college fund" ? You think by deleting your post, many wont recall that?

You're demented and slanderous. You're calling me a scammer claiming I pulled off some securities fraud and then no one noticed? You can't find the post on bitcointa.lk for a reason, because you're either trolling or lying.

blah blah blah

Many times, you claimed to be Master Engineer....., you always started " I'm an Engineer.....blah blah,.... so you should fcking listen to me ....blah blah", while you cant even compute a simple power consumption.
Anyone can read this thread, and see what kind of person you are

https://bitcointalk.org/index.php?topic=256507.0

All of the hero and legendary members should remember your BS posts. Lucky for you, they're no longer active and this section is full of noobs.


I have a masters in mechanical engineering, yes. What you've quoted was when I suggested that a guy with 4 batch 1 Avalon user who made $100,000s shouldn't be so up in arms that another of his batch 1s was delayed.

Everything else that you've quoted from someone else [and not me...] is rubbish.

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October 15, 2014, 07:13:31 AM
 #822

Can we get back on topic please and make this thread regarding the S4, if you guys want to go duke it out, create a new thread.

Back on topic, any updates on how we can tell the difference between batch 1 and batch 2 of the S4? Maybe with pictures too?

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October 15, 2014, 07:29:15 AM
 #823

I'm abit confused Dogie...... Which kind of master degree you got? I'm sure as hell MBA isnt "Master of MechEng"

There is a reason i quote others that quoted you, idiot.

More entertainment from you Dogie: https://bitcointalk.org/index.php?topic=295358.0

You sure sound like an adult with Master degree there.

I've already said this is off topic 10x but he won't stop spreading lies about me, so I have to disprove them.

If you were able to read english, you would understand that I was replying to the statement "why don't you have lots of money". I was saying that those two degrees are expensive to attain. I have attained one of them so far.

Why you're randomly [and badly] bringing up 18 month old posts I have no idea. Go post in scam accusations.

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October 15, 2014, 07:41:39 AM
 #824

Power supply replacement for the Antminer S4

Dear loyal customers,
Today we have found out that the batch of power supplies shipped out in batch 1 and the first part of batch 2 Antminer S4s contain a critical defect. The customized power supply produced by AplusPower Co. Ltd is suffering from an unacceptably high failure rate and will be replaced with immediate effect.
We take full responsibility for the problems caused and had not anticipated the unique loading conditions of a miner when selecting and testing the suitability of these power supplies. You can read more about the defect in the post below.
We are now taking steps to ensure that customers are impacted as little as possible. The rest of batch 2 S4s will come with the improved power supply as standard.

The following actions are being taken for miners already delivered:
1)  If your PSU has already failed:
•   Submit a RMA request with some pictures and proof [ie with your username in the photo] of your PSU’s failure to info@bitmaintech.com.
•   We will then ship a new PSU out as soon as possible.
•   We will also issue compensation to the value of 10 days of mining profit calculated starting from shipping date
2) If your PSU has not failed and the miner is running normally:
•   We will ship a new PSU to you.
•   Please do not contact support yet, you will receive an email asking to confirm your shipping.
      


Analysis of power supply failures within the first batch of Antminer S4s

We are sorry for the inconvenience you may have experienced regarding power supply failures, or even sporadic events of smoke from our first batch of Antminer S4s. We immediately set out to investigate the reports of failed power supplies from customers, and have made immediate changes to improve the quality of future deliveries. What happened with these power supplies is not acceptable.



The power supplies failed by two different mechanisms:

1) Failed TR1 or TR2 MOSFETs on the power factor correction (PFC) circuitry.

After investigations, it was found that the unusual service conditions a miner puts on its power supply was the cause of the failure. The repeated abrupt, dynamic loading generated significant current through the PFC circuits, eventually leading to the failure of the TR1 or TR2 MOSFETs.

The replacement power supplies have significantly upgraded PFC circuits in order to improve performance and prevent a recurrence of the problem.


2) Failed MOSFET on the output Synchronous rectifier circuit

A MOSFET on the output Synchronous rectification circuit was also found to be failing, due to the repeated and sudden load changes during the miners’ operation.

During normal operation, the output MOSFET is expected to carry a current of approximately 30A and operate at a surface temperature of around 80C. The failing MOSFET was found to be heating up significantly further than this, causing the carbonized black PCBs and smoking thermal pad.

It is worth noting that although a failed output MOSFET at high temperatures may result in some smoke from the PCB and thermal pad, it will not start a fire. All internal components of the PSU meet the requirements of the UL94-V0 flame retardancy standard, which certifies that any ignition will self-extinguish within a maximum of 10 seconds.

In response to this problem, the sample filter in the Synchronous rectifier circuits have been altered to erase the excessive current, and so the MOSFET will not fail again. In addition, several high temperature prevention circuits have been added which will better protect the power supply from overloading and excessive temperatures.


Moving forwards

We always perform significant dynamic testing on chosen power supplies, however in this case we failed to recognize the special conditions and specific loading characteristics the miner would place on the power supply. Our testing has been altered to replicate and include these loading characteristics on any power supplies introduced in the future. Once again, we are sorry.

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October 15, 2014, 08:33:16 AM
 #825

you guys are really outstanding. Congratulations on excellent business behavior and customer service!
pikachuy
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October 15, 2014, 08:59:39 AM
 #826

2) If your PSU has not failed and the miner is running normally:
•   We will ship a new PSU to you.
•   Please do not contact support yet, you will receive an email asking to confirm your shipping.

How can we confirm if we have the defective PSU if it hasn't failed yet? And how would it work if we are buying from a reseller, do we still get the new PSU ship directly to us or the reseller gets it?

Please describe how we can tell the difference from a defective PSU S4 model, and a non defective PSU S4 model, before they get defective.

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October 15, 2014, 10:13:57 AM
 #827

I assume you will be replacing the underpowered controller in the next batch also?

"When one person is deluded it is called insanity - when many people are deluded it is called religion" - Robert M. Pirsig.  I don't want your coins, I want change.
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October 15, 2014, 10:48:19 AM
 #828

We take full responsibility for the problems caused and had not anticipated the unique loading conditions of a miner when selecting and testing the suitability of these power supplies.
...

We are sorry for the inconvenience you may have experienced regarding power supply failures, or even sporadic events of smoke from our first batch of Antminer S4s. We immediately set out to investigate the reports of failed power supplies from customers, and have made immediate changes to improve the quality of future deliveries. What happened with these power supplies is not acceptable.



Many thanks for this. Incredible integrity. Is this problem a different one than the lower than reported hash rate?

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mindtrip
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October 15, 2014, 12:01:40 PM
 #829

Power supply replacement for the Antminer S4

Dear loyal customers,
Today we have found out that the batch of power supplies shipped out in batch 1 and the first part of batch 2 Antminer S4s contain a critical defect. The customized power supply produced by AplusPower Co. Ltd is suffering from an unacceptably high failure rate and will be replaced with immediate effect.
We take full responsibility for the problems caused and had not anticipated the unique loading conditions of a miner when selecting and testing the suitability of these power supplies. You can read more about the defect in the post below.
We are now taking steps to ensure that customers are impacted as little as possible. The rest of batch 2 S4s will come with the improved power supply as standard.

The following actions are being taken for miners already delivered:
1)  If your PSU has already failed:
•   Submit a RMA request with some pictures and proof [ie with your username in the photo] of your PSU’s failure to info@bitmaintech.com.
•   We will then ship a new PSU out as soon as possible.
•   We will also issue compensation to the value of 10 days of mining profit calculated starting from shipping date
2) If your PSU has not failed and the miner is running normally:
•   We will ship a new PSU to you.
•   Please do not contact support yet, you will receive an email asking to confirm your shipping.
      


Analysis of power supply failures within the first batch of Antminer S4s

We are sorry for the inconvenience you may have experienced regarding power supply failures, or even sporadic events of smoke from our first batch of Antminer S4s. We immediately set out to investigate the reports of failed power supplies from customers, and have made immediate changes to improve the quality of future deliveries. What happened with these power supplies is not acceptable.



The power supplies failed by two different mechanisms:

1) Failed TR1 or TR2 MOSFETs on the power factor correction (PFC) circuitry.

After investigations, it was found that the unusual service conditions a miner puts on its power supply was the cause of the failure. The repeated abrupt, dynamic loading generated significant current through the PFC circuits, eventually leading to the failure of the TR1 or TR2 MOSFETs.

The replacement power supplies have significantly upgraded PFC circuits in order to improve performance and prevent a recurrence of the problem.


2) Failed MOSFET on the output Synchronous rectifier circuit

A MOSFET on the output Synchronous rectification circuit was also found to be failing, due to the repeated and sudden load changes during the miners’ operation.

During normal operation, the output MOSFET is expected to carry a current of approximately 30A and operate at a surface temperature of around 80C. The failing MOSFET was found to be heating up significantly further than this, causing the carbonized black PCBs and smoking thermal pad.

It is worth noting that although a failed output MOSFET at high temperatures may result in some smoke from the PCB and thermal pad, it will not start a fire. All internal components of the PSU meet the requirements of the UL94-V0 flame retardancy standard, which certifies that any ignition will self-extinguish within a maximum of 10 seconds.

In response to this problem, the sample filter in the Synchronous rectifier circuits have been altered to erase the excessive current, and so the MOSFET will not fail again. In addition, several high temperature prevention circuits have been added which will better protect the power supply from overloading and excessive temperatures.


Moving forwards

We always perform significant dynamic testing on chosen power supplies, however in this case we failed to recognize the special conditions and specific loading characteristics the miner would place on the power supply. Our testing has been altered to replicate and include these loading characteristics on any power supplies introduced in the future. Once again, we are sorry.



My RMA has already been processed and the new PSu should be delivered today. Thank you for the quick RMA processing and standing behind your product to support your loyal customers

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October 15, 2014, 12:28:14 PM
 #830

Outstanding. Good job, Bitmain. How a company reacts to a problem says everything. You will be rewarded by your customers for taking care of them.

Anyone have $200 coupons for a reasonable price? PM me if so.
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October 15, 2014, 12:53:50 PM
 #831

And THIS is why despite the issues with hardware they had, that they continue to get my business and I use their hardware. They OWN their mistakes instead of blaming it on others and then do what they gotta do to make it right. Bravo guys. Sucks about the hardware issue, but I applaud your ownership of the issue (even tho it was not your issue entirely), and your hard work to make it right.

Power supply replacement for the Antminer S4

Dear loyal customers,
Today we have found out that the batch of power supplies shipped out in batch 1 and the first part of batch 2 Antminer S4s contain a critical defect. The customized power supply produced by AplusPower Co. Ltd is suffering from an unacceptably high failure rate and will be replaced with immediate effect.
We take full responsibility for the problems caused and had not anticipated the unique loading conditions of a miner when selecting and testing the suitability of these power supplies. You can read more about the defect in the post below.
We are now taking steps to ensure that customers are impacted as little as possible. The rest of batch 2 S4s will come with the improved power supply as standard.

The following actions are being taken for miners already delivered:
1)  If your PSU has already failed:
•   Submit a RMA request with some pictures and proof [ie with your username in the photo] of your PSU’s failure to info@bitmaintech.com.
•   We will then ship a new PSU out as soon as possible.
•   We will also issue compensation to the value of 10 days of mining profit calculated starting from shipping date
2) If your PSU has not failed and the miner is running normally:
•   We will ship a new PSU to you.
•   Please do not contact support yet, you will receive an email asking to confirm your shipping.
      


Analysis of power supply failures within the first batch of Antminer S4s

We are sorry for the inconvenience you may have experienced regarding power supply failures, or even sporadic events of smoke from our first batch of Antminer S4s. We immediately set out to investigate the reports of failed power supplies from customers, and have made immediate changes to improve the quality of future deliveries. What happened with these power supplies is not acceptable.



The power supplies failed by two different mechanisms:

1) Failed TR1 or TR2 MOSFETs on the power factor correction (PFC) circuitry.

After investigations, it was found that the unusual service conditions a miner puts on its power supply was the cause of the failure. The repeated abrupt, dynamic loading generated significant current through the PFC circuits, eventually leading to the failure of the TR1 or TR2 MOSFETs.

The replacement power supplies have significantly upgraded PFC circuits in order to improve performance and prevent a recurrence of the problem.


2) Failed MOSFET on the output Synchronous rectifier circuit

A MOSFET on the output Synchronous rectification circuit was also found to be failing, due to the repeated and sudden load changes during the miners’ operation.

During normal operation, the output MOSFET is expected to carry a current of approximately 30A and operate at a surface temperature of around 80C. The failing MOSFET was found to be heating up significantly further than this, causing the carbonized black PCBs and smoking thermal pad.

It is worth noting that although a failed output MOSFET at high temperatures may result in some smoke from the PCB and thermal pad, it will not start a fire. All internal components of the PSU meet the requirements of the UL94-V0 flame retardancy standard, which certifies that any ignition will self-extinguish within a maximum of 10 seconds.

In response to this problem, the sample filter in the Synchronous rectifier circuits have been altered to erase the excessive current, and so the MOSFET will not fail again. In addition, several high temperature prevention circuits have been added which will better protect the power supply from overloading and excessive temperatures.


Moving forwards

We always perform significant dynamic testing on chosen power supplies, however in this case we failed to recognize the special conditions and specific loading characteristics the miner would place on the power supply. Our testing has been altered to replicate and include these loading characteristics on any power supplies introduced in the future. Once again, we are sorry.


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October 15, 2014, 01:35:03 PM
 #832

This is a great step of goodwill .. I will wait to cheer until I see the full execution… I do have a question about the controller ? Is the controller 100% affected ? The reason I ask is the person I'm working with wants me to take a controller from a good miner and put it in my bad miner with the power supply of a good miner… I'm continuing to jump threw Bitmain hoops so I'm very interested in the 10 days mining compensation .. I still am not to the part where they RMA me the PSU for my current broken one Sad I guess today I play musical parts with my miners per Bitmain request .

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October 15, 2014, 01:40:29 PM
 #833

I assume you will be replacing the underpowered controller in the next batch also?

can you give us details on this ? only reason I ask, the Bitmain tech is asking me to switch boards from one of my working miners .

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October 15, 2014, 02:04:10 PM
 #834

I assume you will be replacing the underpowered controller in the next batch also?
can you give us details on this ? only reason I ask, the Bitmain tech is asking me to switch boards from one of my working miners .

Ckolivas was quoted a few pages back about it:

It turns out the controller is so low powered that it can only process ~30 shares per second which mean that unless diff is set higher, they work their way into a death spiral before diff catches up. Great...

EDIT: Which presumably means that it can't be fixed by any new firmware releases - it's a hardware issue.

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October 15, 2014, 02:14:10 PM
 #835

Outstanding. Good job, Bitmain. How a company reacts to a problem says everything. You will be rewarded by your customers for taking care of them.

Anyone have $200 coupons for a reasonable price? PM me if so.

I have one - no intention of using it.

"When one person is deluded it is called insanity - when many people are deluded it is called religion" - Robert M. Pirsig.  I don't want your coins, I want change.
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October 15, 2014, 03:09:43 PM
 #836

2) If your PSU has not failed and the miner is running normally:
•   We will ship a new PSU to you.
•   Please do not contact support yet, you will receive an email asking to confirm your shipping.

How can we confirm if we have the defective PSU if it hasn't failed yet? And how would it work if we are buying from a reseller, do we still get the new PSU ship directly to us or the reseller gets it?

Please describe how we can tell the difference from a defective PSU S4 model, and a non defective PSU S4 model, before they get defective.

The new, good PSUs have a barcode on the outside of the case. Old ones don't.


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October 15, 2014, 03:10:23 PM
 #837

I think they have handled the issue pretty well...10 days compensation is really nice. I think I might have to snag a few S4's now!

.BITSLER.                 ▄███
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dogie
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October 15, 2014, 03:10:49 PM
 #838

I assume you will be replacing the underpowered controller in the next batch also?
can you give us details on this ? only reason I ask, the Bitmain tech is asking me to switch boards from one of my working miners .

Ckolivas was quoted a few pages back about it:

It turns out the controller is so low powered that it can only process ~30 shares per second which mean that unless diff is set higher, they work their way into a death spiral before diff catches up. Great...

EDIT: Which presumably means that it can't be fixed by any new firmware releases - it's a hardware issue.

You can keep quoting this, but he issued a firmware fix which 'fixed' it, and Bitmain will issue their own firmware fix soon.

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October 15, 2014, 03:26:12 PM
 #839

I've already said this is off topic 10x but he won't stop spreading lies about me, so I have to disprove them.

If you were able to read english, you would understand that I was replying to the statement "why don't you have lots of money". I was saying that those two degrees are expensive to attain. I have attained one of them so far.

Why you're randomly [and badly] bringing up 18 month old posts I have no idea. Go post in scam accusations.
NO you did not you little lying piece of shit. You got a master degree in less than a year? from MIT? while living in your mom's basement in UK?

The fact that you lied to get ppl to "donate" money while fcking brag about building a $1Million company at age of 13 does not make you a scammer? There is a reason why the forum prohibits begging now, to block fcking pathetic liar like you. There is nothing random about you, everyone here long enough knows what a joke you are.

More off topic stuff, but forced to reply to the lies...

1) Yes, I have a masters in mechanical engineering - you just repeating "no" does not remove my degree :/
2) No its not from MIT
3) I've been financially independent from my parents for the last 7-8 years.
4) I never lied that I was/am/will be paying for college....
5) I've never forced anyone to donate, even for any of my guides...
6) If people want to donate, they can do. In the last 18 months donations have not exceeded $200 or so.
7) It was in £
Cool It was sales. I don't know about you but I don't want around donating companies by their net worth.
9) Post a scam accusation, this is all off topic.

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October 15, 2014, 03:27:09 PM
 #840

I assume you will be replacing the underpowered controller in the next batch also?
can you give us details on this ? only reason I ask, the Bitmain tech is asking me to switch boards from one of my working miners .

Ckolivas was quoted a few pages back about it:

It turns out the controller is so low powered that it can only process ~30 shares per second which mean that unless diff is set higher, they work their way into a death spiral before diff catches up. Great...

EDIT: Which presumably means that it can't be fixed by any new firmware releases - it's a hardware issue.

You can keep quoting this, but he issued a firmware fix which 'fixed' it, and Bitmain will issue their own firmware fix soon.

Con says the firmware hack didn't actually fix the problem.
I will probably be giving the default Eligius difficulty a bump soon. Pretty much anything that sits at 128 difficulty is pointless to run these days anyway.  Might take it to 1024 for a minimum difficulty.

But the above is correct, there is no way to custom set a difficulty.  This is also not necessary with proper hardware and software. The pool chooses the appropriate difficulty.

Flashed 1 S4 to the latest firmware... Miner showing 2Th/s, Pool showing 700GH/s. Difficulty on the box is showing 512, and everyone has recommended 2048 or higher. Hope this can be sorted out soon so I can move these miners back to eligius.

I believe CK has a workaround in the latest cgminer.  Not yet officially in the firmware..
Unfortunately not. I tried a simple hack on their driver and it only partially helped. They just need to get off their arses and fix their driver which appears broken.
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