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1  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: November 13, 2014, 12:27:16 PM
Been nursing my TMIV's since April.  Thankfully, they're still going strong more or less.

My cooling system went bad on one board a couple of weeks back.  So I ordered two of the Corsair H60s as per a previous post in this thread.  Now I'm back in business.  It was a bit tricky getting the radiators in the box, but the method of sandwiching the fan between the two radiators seems to work just fine.

Thought I'd post as such.
2  Bitcoin / Pools / Re: *** GHash.IO mining pool official page *** on: September 10, 2014, 05:21:13 PM
Yup down here too.   I have no idea for how long.  Switching workers now ...
3  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: August 19, 2014, 06:30:30 PM
My piece of shit cointerra died today. I am going to take a sledgehammer and smash it. Then I am going to douse it with gasoline and burn it.

A friends half died yesterday.  It seems they had the 30 day warranty (originally 3 months) because they knew there were problems that gave them a short life.  Is it a total death or is one CTA board still good?  I may be interested in the working board.

Try disconnecting the "black and white" cable that goes to the PSU.  Google around (and on this site) for pics and other info.  It's the most common cure for the "one dead board" syndrome.
4  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: August 19, 2014, 06:29:33 PM
My piece of shit cointerra died today. I am going to take a sledgehammer and smash it. Then I am going to douse it with gasoline and burn it.

I suspect it can be fixed, even if partially.  If not, you can sell it on eBay either as one unit or part it out.  EG., the power supplies sell for almost $300 ea.
5  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: August 15, 2014, 08:49:30 PM
I'm pretty sure it was the code for the CTAs, yes.  It may have even been linked on a thread on BTC forum.  I can't recall but perhaps someone here can find the link.  May have been another forum.  I'll keep looking too.
6  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: August 15, 2014, 02:33:16 PM
I was able to unwrap the DFU header.  It flashes to address 0x00000000 so a complete rewrite.  I also noticed that the payload grew by 10kB between 0.4.5 (0.7.6) and 0.5.29 (0.7.46? something not yet published I have 3 versions).   I may not yet have it perfect, I had a problem validating the DFU suffix meaning its either not there or is in a format other than I expected it to be in.

This means that I can start looking at the code.  Hopefully the rest is more straightforward.

You know all their firmware was on Github not long ago.  It's quite possible you may be able to find it in a net archive someplace.  If you did, it would save you a ton of trouble.

I feel silly for not grabbing it myself.
7  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: August 14, 2014, 04:57:24 AM
The only thing I can think of is they used refund money from customers to build their cloud mining operation, so the store on broad street manhattan could have the miners in stock, etc.  They expected sales to explode and they didnt.  They expected profits to soar and it was more costly to have the units made and delivered.  They now do not have the cash to refund people and are struggling on that front hoping to mine their way out with gear they cant sell.  I could be wrong, but that is the feeling I get.  That insolvency is just around the corner. 

Yup, that's my take on it too.  Not sure about insolvency though.  I think they were able to keep many, many machines to use in their mining op.  In fact, I can't help but feel the recent spike in hash rate might be their latest round of machines at the new data center they teamed up with.
8  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: August 14, 2014, 04:53:20 AM
Both of my CTA's are running extremely hot, 85 - 115 C and I am experiencing terrible hash rate.  Low of 200G to a high of 1.2T.

So, it seems like some thermal paste may help address the issue.

The question I have is which type is better.....

- Liquid Pro

OR

- IC Diamond

Seems like some folks have had issues with Liquid Pro due to the conductive nature of it - but there seems to be several documented positive results.

What about IC Diamond?

Should I try IC Diamond first to be safe?

Suggestions.....

Having applied various types of thermal interface material to my chips, I have to say that it really boils more down to technique.  By that I mean that if you "do it right" you should be fine with ICD or even AS5.

Make sure you clean off the old TIM very well.  Also make yourself some guide pins to keep the cooling block in place as you screw it back on.  I suggest 2" sharpened wood dowels (or chopsticks).  Don't use too much TIM either.  Definitely don't use any on the outer square metal "ring" that surrounds the 4 chips.

Last but not least, be gentle when re-torquing your hold down screws.  I'm not 100% sure they even need to be screwed back in all the way.  Just get them good and snug and tighten opposite screws at a time.
9  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: July 31, 2014, 07:09:53 PM
If you have a Cointerra machine and you feel they haven't lived up to their promised service or performance, here's another link you can try to get some resolution.  You won't have to pay for it either:

http://www.bbb.org/central-texas/Business-Reviews/virtual-currency/cointerra-inc-in-austin-tx-1000104440/
10  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: July 31, 2014, 06:37:25 PM
This is like a slap to the face. Look what Cointerra is selling now.

http://cointerra.com/product/non-warranty-repair/

Wow.  That is one very large pile of bull****.
11  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: July 26, 2014, 05:21:45 PM
You don't need to completely remove the entire cooling assembly.  The block hoses should have just enough play in them so they can be set out of the way.  It may depend on how your power cables are set up.  On mine, they weren't an issue.

Perhaps most important, use some guides to keep the block in place when screwing it back in.  I used 3" wood dowels (chopsticks) sharpened on both ends.  You don't want the block moving around and smearing your paste all over as you screw it back in place.
12  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: July 17, 2014, 06:49:19 PM

Stuff is like (and likely contains quite a bit of) liquid mercury.

It's actually mostly gallium, the other element that is liquid close to room temperature:

http://www.coollaboratory.com/pdf/safetydatasheet_liquid_pro_englisch.pdf

Given that spec sheet, Liquid Pro it is most certainly Galinstan, or a slight modification of it.

http://en.wikipedia.org/wiki/Galinstan

That's actually quite cool.  Good find.
13  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: July 17, 2014, 06:46:04 PM
Is Liquid Pro "removable"Huh

I have heard people saying that applying these kind of liquid metal paste will join the block and chips so hard that it will become very difficult to remove later.

So, if need to do maintenance later, how to?

That is a potential issue I think as well.  I have noticed, however, that you can still remove LP after a day or two.  So if you don't see the gains you like, you can always fall back to a regular paste.

Ironically, my board is now running fine (minus a die) using some CoolerMaster paste that came with a CPU cooler I had.  I think that some of the issues people may be having are application related?  Go get some chopsticks, cut them down to about 3" and sharpen one end.  Stick them in the holding screw holes (they will screw slightly in) and use them as guides.  Or ... go get some longish m3 screws.  Make sure not to apply too much TIM.  I also have a hunch that the screws do not necessarily need to get torqued all the way down.  Tightish, yes, but perhaps not fully in.  I wonder if full torque might damage the very delicate goldstrikes, esp. if they don't sit properly flush with the surrounding metal square.
14  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: July 16, 2014, 06:02:39 PM
OK so I have got myself a Silverstone Tundra TD3 water pump and replaced my faulty pump.

Unfortunately it is not much better than the cheap Cooler Master Seidon 120 that I've tried a few days ago...


Both could solve my problem, partially.  With the replacement pump I can now mine with all 16 cores, but only if set to Power Step 6.  many chips shuts as soon as I step up to Power Step 7.  Probably the pump is not strong enough to remove the heat???

The pump speed only reads 1200 RPM for TD3, while it's ~1000 RPM for Seidon 120.  Noticed that the original cointerra pumps are 3000 RPM ...


Any idea on how I could boost the replacement pumps so that I could fully utilize my miner to Step 9 again?  Maybe Liquid Pro could help?  I am using Artic Silver 5 for thermal paste now.

LP will likely drop your temps a few more degrees.  But be very careful when applying the stuff.  Unlike AS5 it's electrically conductive.  So it can short out your board if it gets in the wrong place.  

Stuff is like (and likely contains quite a bit of) liquid mercury.  This thread has lots of good info on how to go about applying.

Also, your chips shouldn't shut down at PL7 unless they're getting above 120C.

Lastly, when you applied AS5 did you also apply it to the square "ring" that surrounds the chips.  I'm pretty sure you do not need to apply there.  My hunch is that doing so "lifts" the cooling block ever so slightly off the chips.

Several have speculated that the chips suffer from some misalignment in the horizontal plane ... which makes for tricky cooling issues and thermal paste application that lots have been experiencing.

But it sounds more like you need better pumps.  Also, what's your intake air temp?  IE., the temp in the room.  I've found if it's above 80F everything starts to overheat.  Below that and things are fine.
15  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: July 16, 2014, 05:57:45 PM
Has anyone here replace the Beaglebone in their Terraminer?
Thanks.

If you want to completely duplicate the setup Cointerra put on there, you'd need to image the beaglebone exactly as they did. If you really, really want to have it back as-is, you might be able to get an image dump from someone. Otherwise I'd just load on some default embedded linux version for the beaglebone, compile a version of cgminer, and just run that.


Quote
What firmware version are you running?  I've tried them all, from 0.6.x through 0.8.8.  Makes no difference.

Where are you getting version 0.8.8?

Seriously.. wtf is this 0.8.8 shit? sounds like you got infected. Smiley

Lol ... no.  This was all discussed at great length on the CT forums before they put them down.  Believe it or not.  I'm not sure what advantages 0.8.8 has.  But the LED lights seem to respond a bit more.  IE., pwr LED stays green and/or turns red if the machine hangs.  It also has an option for more extensive debug output.

I have no reason to make this up ... and no my machines are not infected.  ;-)
16  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: July 15, 2014, 07:16:46 PM
Quote
What firmware version are you running?  I've tried them all, from 0.6.x through 0.8.8.  Makes no difference.

Where are you getting version 0.8.8?

I got it from their tech. support a while back.  I think it's similar to 0.7.6 with added support for extensive debug printout put nicely into a tarball so you can (could) email it to CT.  I don't think CT cares so much anymore.  

Someone had a set of links to all the firmware versions on the CT forums, before they took them down.

They were all up on GitHub too but I'm not sure if they still are.  The devs may have wised up and put them into a private repo.

I suspect if you email support@cointerra.com they might still send it to you.  Who knows.
17  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: July 15, 2014, 01:45:25 PM
Ok, here's some bizarre observational data.

When I run with PL7 or below the bad temp sensor tends to flip on the plus side more often (eg., +300C) and the other core on the board runs in the 70s - 80s.

When I run with PL8 or PL9 the sensor seems to stay in the negative more often ( -299C currently) and the other core runs in the 60s.

Go figure.  More power = lower temp.

Things go kooky when chips and senors get wonky.

EDIT:  not so sure about this anymore.  It seems to flip back to + without rhyme or reason now.  I may have to just disable the board entirely.  First I'll have to check how much power it's drawing.  I suspect it's now a very inefficient miner electricity wise.

EDIT:  yup, it's been showing +300C or so all day, hence no mining from CTA0 as it's throttling itself.  I wish there was a way to force it NOT to throttle.
18  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: July 15, 2014, 04:28:53 AM
have you tried my idea, or pulling the 3-pin power supply off the bad block?  It should shut that core down, and thus revitalizing the good core remaining on that board.

FYI, I have now one machine with only 3 water blocks connected (one core with no water block, waiting for the new block to arrive tonight).  And it is hashing nicely with 12 chips, 4 at rest because of the lack of any water cooling system connected to it, not even the power connected.

Try this

I did try it.  No luck.  The core does not shut down.  I'm pretty sure that cable only reports pump speed.

What firmware version are you running?  I've tried them all, from 0.6.x through 0.8.8.  Makes no difference.
19  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: July 15, 2014, 03:25:57 AM
Shortly after writing the above, I see my core temps have flopped back to the + side of nonsense.

Core Temp 1 (C)   34.7   31.24   32.71
Core Temp 2 (C)   326.59   28.09   105.18

It will occasionally flip back to a very large negative temp, but now seems to be stuck on the positive side, so the CTA is not hashing at all since the system thinks it is running too hot and is throttling it off.

What a pain.
20  Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial on: July 15, 2014, 02:35:57 AM
you scared the hell out of me ... just received my liquid pro yesterday, and some thermal pads too from coollab

i hasitate to apply now ...

btw, how many chips can one syringe of liquid pro cover?? I only got 1 syringe and doubt it would be enough even for one machine ...

I don't think you need to be scared.  But I will say that I've basically had this happen with the last two boards I've applied TIM to.  The first was over a month ago using Noctua HT-N1.  It seemed fine, then a die went bad (remember there are 8 dies per board).  There was no rhyme or reason to it either.  I inspected afterward an my application was fine.  No overflow, short circuit, or anything.

Most recently, using LP, the same thing happened but worse.  The temp sensor went along with the goldstrike die causing more problems.  A dead die isn't so bad.  You just lose 1/8 of your boards hashing power.   I can't say I blame LP for this either.

Particularly if you have no choice and your machine is running way too hot, then I'd say to go ahead with the LP.  I honestly believe it's better than other TIM.

Some notes:

1.  I modified my jig since I can't find long M3 screws near where I live (Lowe's doesn't have them).  Simply put, I cut the chopsticks down to about 2" long and just used them as temporary screws.  Turns out I really didn't need the foam and the top part of the jig.  The sticks / wooden pins worked just as well as my more complicated jig.  Regardless, you really do need something to keep the water block in place when applying any TIM to these machines.

2.  Use a good solvent to get rid of the old TIM.  I used Arcticlean.  But who knows, maybe that's the culprit here for all I know.  It is a common element.

3.  Make sure you apply LP to both the cores AND the bottom of the water block.  I feel like one syringe of LP can do an entire machine, or pretty close to it.  You really DO NOT NEED MUCH material when applying.  When you "paint" it on to the bottom of the block you'll see.  It's like you're spreading it only a few molecules thick.

4.  After you restart your machine and especially if it seems ok, try to just leave it that way for at least 24 hrs.  I feel like in both instances where I've had a board drop a die, it happened after a restart that occured shortly after application.  I'm speculating here.

Here is something else to consider.  In both my cases, it's been the last core on the board that's gone bad:  core7.  So I'm not convinced this is necessarily the fault of any TIM or application method.  That last core seems to be the weak link in the chain and was also likely the problem core running hot in each case.  So there might be more going on to these failures than we'll never know until some ex employee of CT writes a book or something.

LP goes on more like silver paint than thermal paste.  It also won't stick to a surface until you spread it a bit.  Try to resist the urge to put on too much.

Be careful and you stand a good chance.  But then again, that's what I thought when I started applying Noctua last month (before I went to LP) and I still had a chip go bad.  Any time you work on one of these very fragile boxes you're taking a bit of a chance.
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