That third board is totally misreporting the hashrate.  I would reboot it.  But I should also point out that you are pushing higher temps than most people are comfortable with.  I usually try to keep the boards under 70 and the chips under 100.

I would guess that since it is showing correct hashrate on the pool and since the GH/S(avg) number looks normal it is actually hashing normally and the glitch is just on the reporting side of things.

Did you try and get warranty repair on your failed S9 board?  Just curious.  Surprised to see you buying more.


I have one board on one miner that occasionally shows x's at stock freq but I have it downclocked and it doesn't happen.  The board in question is clearly problematic, at stock it sometimes only hit about 60% of expected hashrate and never went any higher.  It would take me several reboots to get it to come up higher but even then it wouldn't hit the numbers of the other two boards, and it would pop up occasional x's as mentioned.  When it was doing that the x's would come and go although usually on the same 4 or 5 chips.  So yeah, the whole thing is downclocked and it doesn't happen.

Turn it off and then make sure all of your cables are connected correctly and securely.  Then power it on and see what it does.  If, during your previous testing, you powered a hashboard without powering the controller you may have damaged it, it is also possible it was damaged by heat since it appears that you have established that you had a fan problem.

Based on what I see for chip temps with a PCB temp around 70 I would think the chip would go much higher than 115 with the PCB at 80.

I would rather they simply honored the warranty.  If it breaks in the first 90 days it gets replaced without a lot of rigamarole on their part.  Buying a miner and getting a 10% coupon on the next is worthless if the miner I bought only performs to 66% of spec.  There are a lot of tech companies that provide excellent and reliable warranties.  Bitmain could be one if they wanted to.

I have room for one more S9 but considering the problems people are having and the lack of meaningful warranty support (of which Phil is really just the latest - although technically he hasn't been denied warranty yet but considering the hassle and expense to even see if you will get lucky and have it honored, well...) I think I will forgo another antminer.  The two S9's I have are working reasonably well so far, although one of them has a problematic board so I have to run it underclocked.  But I think I will consider myself lucky and wait for something from a bitmain competitor for my next miner.  Since I am only running three high wattage miners total, having one arrive broken without warranty would be a huge impediment towards ROI.  Especially when ROI is already many, many months out from purchase.

I have a few GPU's working on alts, I may look in that direction for future mining expansion instead also.

This is small consolation but it is a good bet that sooner or later you will be able to buy a replacement hashboard from bitmainwarranty if you wanted.  You might also just see if they can fix it.  Shipping to them will cost much less.

Yes.  XMR pool is all fucked.  Nothing is accumulating now even though miners are submitting shares and about 36-48 hours of mining is unaccounted for.  No response from admin email address either.  Thinking about looking into another pool.  Anyone know a decent cryptonight proxy?

The XMR pool also seems to have problems.

This happens all the time.  It'll be fine as long as the payment actually got confirmed.

I am resisting for now.  But if BTC goes up some more I might bite on one more.  I have one more S7 to replace.  I sure wish there was another mining manufacturing option available.

Well they haven't even gone on sale yet and the price on the high hash units was dropped by a good margin so they are both close to 4.8Th/BTC now. (Although the lower hashing unit is still slightly more economical.)

Agreed that the prices are too high.  It also looks like they are pushing people to buy the lower hashrate unit for whatever reason.  The lower hashrate one is 4.8Th/BTC while the higher hashrate one is 4Th/BTC.  That's a large difference in terms of which is more economical.

EDIT: I guess I should say though that I prefer the prices being too high to being too low.  The price drop on the S7's was faster than the earnings from mining so that later buyers were rewarded for not buying earlier.  I am actually glad to not see that happening with the S9's so far.

That's actually more or less what I have done.  I started with GPU mining BTC and saved my mining earnings and bought up over time and so on just as you said.  However I have always been running these things at work, and even though I could technically add more miners, as the power requirements have increased I haven't felt ok with growing the mine to the limits of the facilities.  I have stated on these boards before that my boss knows about my miners and doesn't care, but I do care that I don't take advantage of the company, and the electricity that I don't pay for but get to use.  So yes I could add more hashrate but I am limiting myself to just three miners over about 1200Watts.  I have some smaller stuff mining alts but I only have 2 S9's and an S7 for BTC and I don't really see myself growing the BTC farm with current power requirements.  Back in the days of the S1's and S3's I had quite a few more but at some point I would need to move to hosted in order not to feel like I was abusing the situation and I can't see that hosted would make ROI at all.

Since the halving these things are not earning very much at all.  I have 2 of them, one of them I got at under 3 BTC with a couple weeks to mine before the halving, and it still looks like it is going to be a long, long time before these ROI and that's without any electricity costs.  I have one underclocked and the other setup to underclock for 6 hours a day and then do stock clock for the other 18 hours.  Based on what others have said about failure rates this looks like a bigger gamble than I had anticipated. 

And what really sucks is that it comes on the heels of S7's that still haven't hit ROI with free electricity and decent resale price on two of them.  In about 2 months I should hit an overall break-even on the S7's since I still have an early batch unit mining at an average 5.02 Th/s but if not for the resale prices those things would have been a loss for sure.  Wondering if the S9's might be better sold at this point rather than gamble on them lasting long enough to get my BTC back.

Well if it is exactly as you say, that sounds pretty pathetic.  If the board isn't fixable it isn't under warranty?  That doesn't sound reasonable for a brand new device.

Well the famine part does anyway. 

With BTC falling I can't see any pricing that is going to work for bitmain.  Anything close to 3 BTC is going to take a year to ROI and right now that's looking to be $1600 and on it's way to sub $1500 from the looks of things.

It's the same worker name, I wonder if it is the same device.  That would be pretty damn odds defying.

Newegg only accepts bitcoin for stuff they sell, the market stuff (which means some other person or company sells it on newegg) can't be paid with bitcoin.  Just FYI.