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Author Topic: ANTMINER S3+ Discussion and Support Thread  (Read 702943 times)
Shermand100
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February 09, 2017, 08:37:54 PM
 #10321

As far as I know they should be compatible. The 3 and 3+ are for all intents and purposes identical, (there was a small revision to the hashing boards a few years ago). The s3+ versions were just a string of good batches of s3 that were capable of stable hashing above the advertised 440gh/s. They called them 3+ so they could justify charging a bit extra for them. The firmware is more likely to be newer on an s3+ board due to it's more recent release date and works with both models.

(I run an s3 and s3+ on the same firmware)

http://pinode.co.uk How to Guide Library for Nodes
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Shermand100
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February 09, 2017, 08:58:43 PM
 #10322

Hi all, I have a question for the community. I still run two s3's, and have done for over a year as a hobby as they are affordable, and due to free electricity. I like that I can run them almost silently on upgraded fans as they run where I sleep.

I have the problem of a dead hashing board, and I have trawled through a vast number of pages here for a solution to resurrect it. Yes I've swapped control boards, plugged in all connectors and as a last resort upgraded to  the lastest firmware. It's definately one dead hash board. The other board is still running great at 220gh/s.

The board failed suddenly. I didn't experience a slowly falling hash rate, one x in the row etc. It just one day died.

I have some experience repairing hashing boards. Namely the awful gridseed g-blade scrypt miner. Those terrible devices had grossly underpowered capacitors, chokes and mosfets that supplied power to the hashing chips and I have replaced components (and upgraded) to resurect them. Is there anyone else here who has tried the same or has any knowlege to share?

Because the whole board failed in one go I suspect one of the capacitors has failed. I'll try to add more info after some proper fault diagnosis rather than speculation.

I would (and i assume the community) like to make some sort of repair guide for those of us technicaly minded, although replacement boards available on aliexpress are tempting. One day those spares will be exhausted.

Anyone with a wiring diagram?

Dan

http://pinode.co.uk How to Guide Library for Nodes
Shermand100
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February 21, 2017, 03:27:35 PM
 #10323

Hi again, an update on my previous post. I ordered a new hashing board from aliexpress for about £20 to the UK from here https://www.aliexpress.com/item/Antminer-S3-220Gh-s-miner-Fitting-16-chip-pcs-PCB-28-NM-Calculation-circuit-board-bitcoin/32657963607.html?spm=2114.13010608.0.0.ViZuUW and the new board works fine and allowed me to remove the old one for a proper bit of testing. I previously left it in to run the second fan on the unit for the benefit of the still hashing blade.

So looking at it there are no obvious burns, warps, cracks etc. so the multi-meter came out to try and test the mosfets (the row of 8 5335555DQP chips). I pulled up the datasheet http://www.ti.com/lit/ds/symlink/tps53355.pdf but these are a little more complex than I'm used to. Granted a bulk of the pins are the 12v in, and the 0.8v out for the BM1382 chips. But some of the other signal and reference voltage pins threw me just due to terminology as I stated this is only a hobby and not a profession.

I settled for trying to test pins 3 and 4 as my best interpretation of gate and drain. Can anyone weigh in on that? Was difficult to test with certainty due to tiny pin size but seems ok.

However if the mosfets are shorted drain to gate as they most probably would, to my understanding as they are set up in parallel the open gate having drain voltage across it would damage all other mosfets as well, killing the whole board. This is a possibility and fit the symptom of the whole board failing at once, with the 12v fan plug unaffected at the top of the board. The replacement chips look costly as they are more complex than simple mosfets. They have many other features and each chip looks to cost around £7 in a small batch order. Making repair un-economical as all 8 would need changing, assuming the mosfets blowing hasn't also damaged the driving circuitry too.

Again is anyone interested in electronics with some knowledge to share? I'm keen to have an attempt at repair, for my own experience, and as it's a currently dead board it's only good as repair practice or a coffee mat. May as well repair it.

http://pinode.co.uk How to Guide Library for Nodes
cameloid
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June 11, 2017, 09:58:10 AM
 #10324

If anyone is still interested in this, I've just built cgminer 4.10.0 for the Bitmain Antminer S3.

- Based on the latest cgminer 4.10.0 from git (changelog: https://raw.githubusercontent.com/ckolivas/cgminer/master/NEWS )
- Statically linked with the latest libcurl 7.54
- Built with gcc 5.3.0

Hashes just fine on my unit so far.

Download link: https://yadi.sk/d/CVhgXxmN3K2SBw
tartoga1
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December 06, 2017, 04:04:20 AM
 #10325

So, I got a cheap S3+ (one hash board was dead) I haven't found replacement hash boards. Is there a why to remove the dead board and get it to run?
gilwen
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December 06, 2017, 12:15:40 PM
 #10326

have a chance to buy this device in China, my friend will buy and forward it to me
is it still a profitable device? what is the payback rate? as i heard the difficulty of the net has been increased and payback may take up to 1 year
leowonderful
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December 06, 2017, 12:46:39 PM
 #10327

have a chance to buy this device in China, my friend will buy and forward it to me
is it still a profitable device? what is the payback rate? as i heard the difficulty of the net has been increased and payback may take up to 1 year
If you don’t specify your electrical cost we have no way of knowing. Regardless of that the S3 is a reeealy old miner and unless you’re using this as a quiet heater or something of the sort it’s really just a collectible. With no difficulty jumps you make less than $100 a year at 10 cents per kilowatt and difficulty jumps will make the unit even less profitable.

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gilwen
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December 06, 2017, 02:31:29 PM
 #10328

have a chance to buy this device in China, my friend will buy and forward it to me
is it still a profitable device? what is the payback rate? as i heard the difficulty of the net has been increased and payback may take up to 1 year
If you don’t specify your electrical cost we have no way of knowing. Regardless of that the S3 is a reeealy old miner and unless you’re using this as a quiet heater or something of the sort it’s really just a collectible. With no difficulty jumps you make less than $100 a year at 10 cents per kilowatt and difficulty jumps will make the unit even less profitable.
thanks  for your reply Smiley
i suppose it's better to simply buy some coins and get some profit in several months
GoldBuffalo
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March 25, 2018, 01:31:06 PM
 #10329

So, I got a cheap S3+ (one hash board was dead) I haven't found replacement hash boards. Is there a why to remove the dead board and get it to run?

Go to Aliexpress. You can get used parts for cheap. Probably get an entire S3 for little and have another for parts. I love the hobby, electricity for me is cheap, so I play the lotto game with miners. Ignore the noise, roll the dice and mine away!
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