Topic: New Official AMT Thread - page 78. (Read 149472 times)

Been looking myself. Found the longer/bigger ones on Amazon that Bitmine used in that pic of one of their boards where the long bottom sink fell off. Biggest problem is coming up with a clip of some sort to make sure they say put. Either that or use thermal glue to make it permanent.

If to be kept repairable I'm thinking more of a thick riser bar spanning several chips and milled for clearance that can be bolted down to give a nice wide surface for bigger sinks.

Considering there should be no need to replace the chips, I think gluing on a bigger sink milled if needed (or use a spacer) to clear caps would be best overall. I'm using http://www.amazon.com/Arctic-Alumina-Thermal-Adhesive-Tube/dp/B0009IQ1BU with 1/4" aluminum cubes on my Ants to link the Vcore switchers to the big heat sinks. Should only need the tiniest dollop but only 5-min work time so don't mix more than ya can use.

edit: Hmm. These folks look interesting for sinks http://www.alphanovatech.com/?gclid=CLzm7snhyr4CFckWMgodGjIA3A The 1/8th brick (a telecom size) power converter series looks very promising indeed..http://www.micforg.co.jp/en/cat_dcce.html#eighth-brick

Got any recommendations for heatsinks? I was looking around for some elongated ones but could not find any that fit the criteria needed to mount here.

Aside from being copper or aluminum color doesn't really matter for the loads put on them. I suppose they could have different tape on them though, perhaps dots vs a square. (Hope not.) The anodizing on aluminum sinks is just ascetics. If ya wanna get picky, flat black is best with measurably but still marginal better radiative dissipation..

Definitely check/re-tape the chipsinks and even better find something bigger to use.
Definitely make sure there is good airflow channeled over them as well.

that is fair, I was asleep while it happened, so I didn't get the chance to see it all with my own eyes. All I know is it killed the fuck out of that board. I wish I would have copied the error cgminer was giving me.

I have a few sinks that are the same color as the sink that fell off perhaps I should remove and take a look at the thermal tape.

Technically no it doesn't.
Under high externally supplied heat source it decomposes with a lot of smoke but when heat source is removed it stops. Same with the circuit boards. Caps are more fun... They pop like a firecracker and spray their guts everywhere

The heat source of course was the A1 chip innards shorting out and being fed by the nice huge PSU's the chip getting up to at least 500C to do that. Whether the sink fell off first, leading to the meltdown who knows. Still not good no matter how ya look at it.

I'm still waiting on AMT to provide me with the documentation I need to see if there is even the remote possibility of bringing these miners back to life. The good news is the bulk of the software work has been done, I just need the code that initializes the backplane, and figure out the HWreset issue. This might be the key to getting these things back to life. If I can force a reset on them every boot, that would be what we need in order to bring them back if a card were to go down from a software problem vs a hardware one.

Nope. Just  burned the chip out as the heatsink fell off. Less life threatening and more a disappointment in performance.

This could well be an issue caused by their manufacture, I won't lay the blame directly on them. Just make sure not to put your miner on gas soaked rags or anything and you should be fine.

Damn.. haven't heard about it but I'm glad to know it. Has anyone been hurt ?

No one mention the fact that the thermal tape catches fire or they'll end up deleting it next time they are on.

you can't sell more than 100% of you company

I've seen companies sell off even with debt (I'd consider that a exception to selling all of your company) unless of course you ment sell all of it have and have remaining equity.

If the can get the board issue turned around and the company sold I imagine they would clear house in terms of management and rebrand. They could just become BMT -Bitcoin Mining Technologies.

Then they could have a sweet (onion sauce) cross promotion with Subway. Or maybe as hot as the miners get they could have a subway promotion where you order a BMT with the creamy sriracha sauce and you are entered to win a miner.

But seriously if they do get it turned around, step one is to get properly working miners shipped before another order is ever taken. That includes miners to everyone who is currently sitting at home with their paper weight. And what ships should be what was advertised, case psu and all unless requested otherwise.

What they do have going for them is they don't appear to have the high profile with the media like BFL, Hash Fast and the like even though they do share a reputation. That could make them a decent candidate to take on a partner to raise capital.

If they make it to that point they should strongly consider using escrow services at the start.  Their reputation is pretty shot IMO and this would help instil confidence in the consumer.  They should be proving to the customer they have changed and the customer should have the chance to give them a second shot at NO RISK to the customer.  They want a "last chance" they should bloody well earn it and start taking the risk with THEIR money!

I wonder if this new BM has them using existing monies to build miners to ship from stock. IF that's the case then nothing has changed really.  Until they dump a bunch of their own money (or investor money) to clean up the shit pile they're in, make things right for original investomers AND build new stock miners they are still just running the same old model.  IMO they need capital to make the switch, I hope they do make the switch but am very leery to be honest.

Righting a sinking ship is usually a very difficult task.  Based on all we have seen publicly from the company I am not personally convinced they have the ability to right the ship.  They need CAPITAL, hard wok, dedication, smarts and LUCK to pull this one out of the fire.

I hope I am wrong and I wish these guys the best of luck turning this thing around.  But ask yourself this, if you were a venture capitalist would you risk your investment on this company?  If they go outside of FF investments (friends and family) then they are going to go through a due diligence phase and the law suits and liabilities (ie unfulfilled orders or refunds) are going to be a huge red flag.  I personally think a lot of investors would look at them as WAY to high risk and that the rewards could never match the risk level (you can't sell more than 100% of you company...)

Fully capitalized entities go out of business everyday in the USA, even more under cap'd ones go under.  Very few of them turn it around.

At the end of the day though hopefully they can make us all whole. There are those of us who can help that are trying to. In the end its to make it better for everyone. I for one would like to see ONE US company come out of this better. While I know they have made some massive fuck ups and I am pretty pissed personally about it, I can get past it if they are making a genuine effort to make things right. For comparison BFL has not done shit to make things right. They have delayed and worse, are now taking that same money and buying up personal things with it. At least seeing AMT trying to restructure properly and hopefully helping the people here who were wronged be righted, that might make for better things down the road for them.

Lotta haters no doubt. But everyone has fucked up and some spectacularly so. But there are those who deserve at least a second shot at getting it right. This isnt baseball tho. A second shot is really all they get. I would be interested in hearing this new plan. And if it involves in stock hardware, let's hope its something worthwhile. I'm still moving forward with my own plans but hope to get these miners working. FYI down to a single working card now. The other one gave up this afternoon. So 1/10 working cards now.

Im still looking at how to reinitialize the cards. The backplane init info is what I need to make this work as its not being detected on either system with my firmware. I am going to attempt to port over your bitmine files you guys have and see and do some code merging. They are in the firmware so I can modify them and port them over to my work in progress.

This is definitely the smartest move (if true) I have seen you guys make publicly.  You have probably saved yourselves more shit than you can imagine by simply doing that.  I assume your council has advised you that in case you lose one, some or all of current and future legal problems that it will be much more believable and easier to ask for leniency because you made a big mistake and once you learned you were making a big mistake you took immediate actions to correct the mistake.  Had you kept taking orders no one would have believed you made a mistake and just "got in over your heads" and you would have lost the ability to plead for leniency based on ignorance.

Little things like this makes the difference (should you lose) between hostile judges/juries and "sympathetic" judges/juries.   Not hard to see which one is better for the defendant if they lose...

It doesn't change what happened and won't get you off the hook for what's done already but it certainly helps minimize the damage and does nothing but give you another option to argue IF you lose cases and need to ask for leniency at some point.

Excellent. Only once you get a handle on actual production times for stable miners should you even think about doing capacity-induced order delays. Those of course would need to be kept within FTC guidelines and fulfilled as they state.

That includes the need to stop/slow down orders as needed until production capacity can be increased. It is a bitch but has to be done. Our company has turned down 3 large orders so far this year because we are booked into next year.

It is for that reason alone as to why we have not accepted new orders in the last few months. We're in the process of changing our business model completely, which will only be an immediate delivery option upon receipt of payment.

Default clock setting should be 16000:750000:4000   essentially under-clocked, or "properly clocked" based on the component setup we have.

Will send to your email today. Posting it publicly is not a good idea, because of the difference in hardware. When using bitmine's original image to run the PI the default voltage was outputting .9 and above. This was due to hardware miscalculations and components with improper values. Our setup script was designed to modify voltages based on the batch of boards which came off the line. If someone with an imporper component setup use for example

"amt-setup dpot 0x5a"  would result in a voltage above .98 resulting and a potential heat issue. This is why we've hesitated to release that option to the public and its why this was simply a script for us to workaround and configure what given to us off the line.

We don't think we changed the drivers at all from bitmines original image for the 1.2 SDcards. For the 2.4, we did rewrite the drivers in order to redress the backplanes so that two setups could work together with on extended 3 port gpio cable.

Chips are not the problem, if they were, then they would not work when removing them and remounting them on a different board/design etc. Chips came from bitmine, and they are not not the problem. 

Do you refer to the big heatsink?

If you put your finger on a heatsink, and it's cold, you know it wasn't done right.