Ya poor choice of words on my side, one of them is a lot harder to take off than the other one.


a spot on as always theirry, do you think it's possible to extract the hex from the PSU's PIC and then write it on the other PSU by using a Pickit of some kind?

Mara pool will have about 10EH by the end of the year, and it's not public, it is owned by Marathon Digital Holdings who are obligated to follow the U.S rules especially since they have their stock in the market under NASDAQ, they wouldn't want to risk anything that would get the U.S government to go after them, while they did not have to announce the censorship publicly, my guess is that they are sending a message to everyone who wants to get involved in crypto within the U.S.

We all know that more 'serious' regulations will come someday, Marathon just wants to be ahead of the game, and want to operate freely and hopefully attract more U.S investors/clients who want to be on the safe side of the crypto world,  Mara did some arse-licking for the U.S government, a very risky move IMO since their survival depends greatly on the price of bitcoin, the only reason they raised 250M in their Direct Sale was the fact that investors were bullish on Bitmain and this was their legal, easy and reuglated way to bet on the price of bitcoin, the slightest shake in bitcoin and Mara will be in deep shit.

It would be great to see what Bitmain has to say about this since they are their main and only supplier.

استعمال المحافظ اللامركزية يعتبر الطريقة الوحيدة الامنة بطبيعتها ومن الصعب معرفة من يستخدمها وطبعا من المستحيل معرفة ارصدتك وحوالاتك من قبل الاجهزة الامنية, اما التعدين فهوا امر يختلف, فنوع البيانات وكميتها وايضا ال destination ip كفيل بفضحك, يعني لو تريد الاجهز الامنية معرفة كل شخص يقوم بالتعدين عليها فقط اخد هده المعلومات من شركات الاتصالات وحينها يتم تحديد هويتك وعنوانك, لذلك اي شخص يريد اخفاء حقيقة انه يقوم بالتعدين يجب عليه اخد احتياطته باستخدام الادوات المتاحة اماه.

it's very common for T17 hash boards to die due to hardware failure, it is unlikely to be a software-related issue, but you could try the stock firmware from Bitmain (avoid the latest version) and then post the kernel log, speaking of which you didn't post the correct logs, this is more of the system logs, Braiins OS+ has a different name for the kernel tab which I forgot, but I am positive it's called something else.

While most cloud mining is nothing but scam, the legit ones such as viabtc or bitdeer actually do own the mining gears, it's a question of whether you are actually renting a mining gear or just the hashpower equivalent, to the client it doesn't matter as long as you get the promised hashrate for the duration agreed upon without any price change, to the service provider it does not make sense to be running what you call a ponzi, because if the hashrate you rent in theory starts making a fortune they will go bankrupt.

That is one of the main reason why most cloud mining services who do NOT own mining gears go broke when they payouts get too large, they are counting on the price of bitcoin as well as the profitability, in general, to go down, in that case, if you pay $1000 and they have to pay $900 during the duration of the contract, they get to keep $100, but with the legit once who have been here for long, they probably understand the risk and won't give you a contract they can't back with real hashrate to avoid a scenario where your $1000 worth of hashrate for a whole year, starts to make $1000 a month.


This logic is terrible, the same as saying "if ASICs make money, why sell them"?, by renting the mining gears you are guaranteed to make a profit regardless of what the market does, while it does reduce your potential profit - it's a great hedge against bitcoin volatility.

If I own 100 gears and I pay $1000 in power per month, and someone offers to rent 50 gears and pay me $1000 a month, I'd most likely accept it, because if my other unrented 50 gears start making less than $500 I would still be in profit and that person who paid me $1000 a month is going to take that loss on my behalf, it makes perfect sense to sell cloud mining contracts.

Cloud mining also provides instant liquidity to the owner of the hashpower, if my gear is projected to make $1000 a year and I get $900 upfront, that isn't bad a deal at all, think of all the things one can do with $900 for a whole year.
 
With that being said, I am pretty sure most legit cloud mining companies will run the numbers to the minimum risk on their side, it's almost guaranteed that renting that power will yield more profit than mining regardless of the market condition, I did run the math for Viabtc mining contracts last year (can't find it anymore) and for Viabtc to lose and the average joe to win, some weird things had to happen, it's like 70% success rate for Viabtc.

Your best shot would be directly contacting bitmain, most of us don't own an S19 yet, and overall, there is little info/history regarding the gear, so it's highly unlikely to find someone who has the firmware you need except of course the manufacturer itself.

I'd also ignore the sticker on the hashboard, as well as what shows on the system page, your miner is S19 and you should treat it as such.

I believe they only differ in the busbar connection tho, I have looked into both PSUs and they seem identical, even the specs are exactly the same, DC output is 14.5V-21V, rated at 170A, I have not tested it but I believe if you can manage the connections (which is going to be a bit of work) they should work just fine.
,   

Yup, Oleg is a fine gentleman. I had a few trades with him in 2019, all went smooth, not the best in terms of price if the order quantity is small, I can also vouch for https://t.me/minerexpertsales (graze), she is an honest seller and prices are ok for small quantities, so always check with both.

Could there be an issue with your electricity setup? The psu on this gear had more dust than one can imagine, the voltage was far from stable but usually within 190-220v, what is your ac voltage?

By the way, if you are interested in buying them from China i can help you locate some.

As mentioned by wndsnb, they are interchangeable, but according to Zeusbtc you want to avoid using more than 4-5 of different chips on the same hash board, so if you can't find 1397AD for your S17 pro, you can get the AH,AI or AG version, but having more than 4-5 of them alongside the AD's will create issues and the hashboard might not function properly.

The hashboard is showing 63 asics which is a good sign, this could be a frequency/voltage issue, I believe if you run it on custom firmware like Vnish and let it auto-tune a low profile like the 12.5th that board might just come back to life.

Please don't try to disable the temp-sensor by any means, it's a very risky thing to do.

A few months ago, these miners were kind of cheap, most weren't really worth fixing, for example, S9 was sold for under $50, which means each hash board was worth about $15 when you include PSU and control board in your math, today that same $15 hash board costs $300 to get, it makes a lot more sense to repair it, even for say 50-100$.

The sudden surge in prices created high demand on repair service, this wouldn't be the case if bitcoin price was still trading under 10k, also I think many people understand this demand is temporary so expanding or starting a new repair business might not be very smart and thus the supply of these services remains constant to a certain degree.

There are is usually no physical damage that can be seen, the T17 miners have a very high failure rate, mainly due to the bad soldering of chips, the chip will usually NOT fall but the contact becomes too weak.

With that said, if you are consistently getting different results, I would flash the stock firmware (avoid the latest one) and test 1 board at a time, this could be a power-related issue, we can't tell for sure especially while running the miner with such firmware.

And why on earth would you do that?


Anyways, the kernel log shows that your chain 1 (the middle hash board) is dead, it could cause the miner to go into a loop of reboot, get rid of the firmware, and see if you see any different results which is unlikely, to be honest, and then just unplug chain 1 and mine with 0 and 2.

Of course, this assumes that you did the basic physical inspections like checking the screws on the busbar and replacing the ribbon cable.

I find it hard to understand this part, it could be your explanation or I am just getting old, but my best guess is that all hash boards work fine as long as you only run 1 hash board!

If the above is correct, then your issue is most likely a bad PSU or low AC input voltage.

The above gear is Whatsminer M21s 54TH, it has been mining since Oct 2019 nonstop, never been cleaned or looked after, it was put under extreme conditions of outside temperature as high as 45c, recently and for the past 30-40 days the rear fan died and the miner did NOT stop hashing, yes, it did not (not sure why MicroBT firmware does not care about 1 out of 2 fans going down).

The backside of the miner was almost boiling, it was too hot to touch, we literally had to let it sit there for a few mins before we could hold it, no Bitmain gear would endure that much except for the old and gold S9s.


As you can see in the image some of the heatsinks were literally blocked, but with zero problems, even by the look of it and without having to be an expert you can see that these gears are more robust than Bitmain's by a huge shot.

Surfing the Chinese market, you get to find a ton of used Bitmain gears but it's very hard to get your hands on Whatsminer, looks like the Chinese have figured this much already long, long time ago.

Comparing the M21s to the 17 series of Bitmain, the winner is obvious, I am pretty sure if an S17 was as dusty and ran with only 50% of its fans, it would have died in no time.

To easily calculate your chances use this website > http://solochance.com/.


This is the last block solved on CKsolo


The miner was lucky to solve a block with 77.7th being his 7d average, of course, we don't know for how long it was, but he most certainly earned more than we could ever earn mining on a pool.

But not everyone is lucky enough, solo mining should be done for fun (I do it for fun on Cksolo), but your main hash power should be pointed towards a pool if you want to make some profit.

I know the question is pointed to phill but I think many of us who dislike POS share some basic ground, my main issue with POS coins is the convenience of centralization, we have to agree that almost everything can be centralized if enough money is thrown at it, but it all boils down to "how easy" you can achieve that.

If we take bitcoin current hashrate and see how someone who is super rich and wants to have control over it, it's not feasible, it is going to take more than just money to acquire say 50% of the hashrate, and most importantly, you can't do it without everyone and their grandmother knows about it, as it stands right now, it's not even possible to control 10% of the hashrate without the whole world knowing who you are.

in POS, the level of convenience towards centralization is mainly based on the market cap of that coin, someone who has enough money can take control over the coin in a few seconds, POS as the name suggests is pure proof of wealth, the more money you have the more control you have, while this is partially true for POW coins too, as explained above it's a lot less convenient to attack or control POW coins.

Another issue with POS is that you can be on multiple blockchains, this creates a major consensus problem which POW solves by default because to be on one chain you need the power and the gears for that, to be on another you need 'different' power and gears.

The last major issue is the acquisition of the "power", if someone has 50% of the supply and refuses to sell, the community can't compete against them since coins can't be created out of thin air, and the fresh supply won't change the percentage, on POW, however, it's extremely difficult for a single entity to own half of the hashrate, and even if that was the case, the ability to take back the power from them is there.

With that being said, POS does have some advantages over POW, I believe both protocols serve different purposes.

Another member(he can reveal himself if he wants to) and I were contacted by a Chinese manufacturer who did something almost identical to what you are trying to archive, they made their own hash boards which were more efficient than the regular S9 hash boards, and their own firmware which you had to deploy on the default controller of the S9 (the hash boards won't work with the default firmware).

The company wanted economical consultation in terms of pricing, I contacted a few major resellers in China, Russia, and the U.S, and sadly the final sale price was not tempting enough to convince anyone to get those hash boards, mind you the company that did this is located in china, and they paid us just for the consultation, they clearly had the money and the manpower needed for that job, and the results were not so great.

I am not aware of where did they go wrong or how difficult it was, but I am certain they had more skills, money, and resources than you do, which is one of the main reasons why I told you in my first comment that this "won't work", it wasn't a blind baseless statement, I hope the above information will be beneficial to you oneway or the other.

Good luck.

Nearly all shapes and forms of civilization have a negative environmental impact, based on that logic we should just get rid of everything around us and live like our ancestors, it's either that or we stop cherry-picking shit.

If we ignore the environmental drama and focus on the economy, in a place where capitalism rules everything, mining bitcoin is a great addition to any economy, It creates jobs
and incentives us to find cheaper methods to generate power.