basically being in the western hemisphere you can barely compete.
Care to explain the large farms known to exist in the Western Hemisphere that ARE still competing? Care to explain how many of us smaller farmers can still compete? Your statement is WRONG on far too many levels. There are a number in the pacific northwest that have been mentioned many times over. Go look at all the places in Chelan County WA alone. Smaller farmers cant really compete, you need to go big to get the good electricity rates. Its been that way for a while but so many people are not willing to accept it on this forum for whatever reason. Before you say I am WRONG please tell me what is so incorrect about my statement and I will gladly explain my position. |
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Basically you have tied up your money for at least 4 weeks while you cannot hash.
Fixed. |
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There is no need to fear firmware upgrades as long as you confirm the firmware is for your device/batch/whatever before attempting to flash. I have flashed literally thousands of bitmain units without bricking a single controller.
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Bitmain has said that you can do that! Breaking the seals over the screws to swap boards w/o authorization is a great way to void the warranty....
Bitmain usually has an order number or serial number sticker on each individual board. They would for sure be able to tell if you did this. |
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basically being in the western hemisphere you can barely compete. so not worth it.. This is 100% wrong. You need to seek out some people with actual industrial mining experience if you want answers to these questions. Honestly a 100k build might net you 60 machines with power supplies if you went with new S9/T9s. You can run the entire business by yourself at that point. There is very little maintenance to do with such a small number of machines. P.S. Someone mentioned R4's. Stay as far away from them as possible. The price per GH is higher than either the S9 or T9 as they are for the ultra foolish home miner that doesnt care about making a profit. Also a quick search of the hardware section will confirm they are extremely unreliable. |
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normally fan 1 is up front where the controllers ethernet jack is and fan 3 is on the back side
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If you look at the very end of the log you will see that one of your boards has two bad chips. All chips should be returning the same 625 number but if you read the log chip 14 and chip 52 are giving bad readings.
Time to RMA a board.
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If both lights are frozen in the on state your beagle bone has crashed. Just power cycle the unit and it should come back. If it does not, try a factory reset on the controller.
There is a pinhole with a button inside, press that button down until it beeps and both red and green lights cycle on and off. This will put the miner back to DHCP so you will have to find its IP again and set your pool information back up if you do the full reset.
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Either the fan itself is seizing up or its already dead and being spun by the front fan. Replace the fan and you should be good to go. Make sure your replacement fan can spin at least 4500 rpm, the firmware doesnt like anything under that.
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It has been said before but bitmainwarranty is not a bitmain company.
As far as the S9 reliability goes I have personally seen a 25%+ failure rate in the first 90 days of operation and I have heard a 30% failure rate number thrown around by other people with very large deployments (900+ units)
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I am pretty sure the reliability issues are going to be the same across all the .10j/gh chips regardless of them being in an S9 or R4. They are trying to run them on the jagged edge of the power required to run the chip properly hence the T9 being slightly less efficient but most likely much more reliable.
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Biggest concern is removing the dollar store heatsinks they seemed to have welded on.
Use a heat gun at about 400c and make sure you wiggle them back and forth slightly while heating, you will feel them loosen and that way you dont overheat them which can cause the entire chip to be pulled out with the heatsink. Also if removing heatsinks from both sides ALWAYS do the larger silver heatsinks first or you WILL pull the chip off when removing them from the other side. The trick is to roll them off and not try to pull straight up as they loosen. Then use a bit more heat and a razor to scrape off the remaining adhesive. |
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CPU mining is a complete waste of time and money. You will not want to do this.
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There is no way around the RPM check. You can delete the wire that allows the miner to control fan speed itself but the RPM check must stay in place. The fix is to purchase a fan that is within spec. You need a fan that can do at least 4500 rpm from what I have experienced wit the S7's.
P.S. Dont trust the 80c limit in the firmware, I have had dozens of machines that heated into the 90s even with the shutoff set at 80c.
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$500 for an S7 is way too much at this point. I wouldnt buy one for over say $300 max. If you are buying then in bulk you shouldnt have too much trouble finding a decent price.
He said he had 10k USD, not bitcoin. Where are you going to buy them in bulk for USD? What does it matter when you can just buy the bitcoin if thats all the seller accepts? Thats the whole point of a fungible currency, you can convert it whenever you want. Also he just said he has 10k, he didnt mention if it was USD, CAD, RMB, or anything else. It also doesnt change the fact that S7s are not worth $500 a piece used. |
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$500 for an S7 is way too much at this point. I wouldnt buy one for over say $300 max. If you are buying then in bulk you shouldnt have too much trouble finding a decent price.
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A bad chip is a bad chip. The way the boards are laid out it only takes one bad chip to take a board out. There isnt much you can do except warranty it.
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just an FYI the EC at the bottom right of the miner status tells you what is wrong
error 513 = error 512 (fan error) + error 1 (idle)
Meaning the fan plug was probably loose, once you reconnect a fan after this error always power cycle the miner to get it hashing again
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your back fan is dead, the RPM its reporting is from the other fan spinning it. Just replace the fan and you will be good to go.
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