Too late now but you would get a refund if you double paid so probably would've been worth it.

Similar thing happened to me with an S7.  I got them to waive the fee after a half dozen phone calls but the driver didn't see that in whatever system he could see so he insisted on payment to leave it.  I paid him and a month later they sent me a refund check.

Here's your problem:

This variable will almost certainly go up over time:

As others have said try lowering the freq.  I have one board which underperforms as well.  If I do a 'save and apply' without changing anything, sometimes it will come up good (higher hash) and sometimes it will come up bad (lower hash).  But lower freq usually means better odds of it coming up good when I restart cgminer.  I can tell within a minute if it got a good start because it will either come up past 3000 or it wont by that time.

Hey if you happen to see how to override the "stop hashing on overheat" feature I would appreciate hearing about it.

I have a board with an erroneous temp sensor that randomly throws out temps anywhere from 70 to 150 or so.  The problem is with most of those the miner refuses to mine at all.  It thinks it is overheating.  It used to throw out zero a lot which would allow it to continue to hash but it doesn't seem to report zero anymore, always some random number, usually in the 90's.  I have that board disconnected so I can hash with the remaining two but I would sure like to figure out how to make it ignore those erroneous temps and keep on mining.

I believe it is somewhat arbitrary.  The one time UPS wanted a fee from me was not the most expensive order I ever made.  As part of the rigamarole I went through to get an explanation (and eventually a refund) I provided old tracking numbers with shipments from bitmain for a greater dollar amount that had no fee attached.  I could practically hear the head-scratching over the phone.  Honestly I think they just wing it and sometimes they randomly decide to add a fee.  My S9 was more than $2000 USD and it had no fee.

EDIT: Wish I had bought another B3 while it was under 3 BTC now.  With BTC this far down I don't see myself buying any hardware for quite some time.

The only time that happened to me was on an S7 and the fee was $38.  I think the cost was around $1900 but I can't recall now.

You might be able to call UPS and get it reversed.  I did.  But I had to pay the driver to get it and they sent me a refund check about a month later.

At the hottest part of the day they are hitting 100-101.  But the PCB temps are right around what the S7's are showing (67-70) so I am guessing the S7 chip temps are hitting those kind of numbers too. 

My batch 3 gets 12.5 Th downclocked to 593 and even then I have to restart cgminer several times for one of the boards to get a decent hashrate.  Luckily I can tell within a minute or so if the board is going to get a decent rate but it kind of sucks that it is hit or miss like that.  If I don't restart cgminer to get that board working well it hashes about 1.1 Th lower.

The config page still has the shutdown at 80 degree option and the chips are always over 80 so I think we can conclude that the temps reported on previous miners (S7, etc...) were PCB temps.  I am getting high 90's (like 98-100) on the chips with the PCB's reporting upper 60's (like 68-69).

It's back up now.

Then that suggests an intentional block on the pool side for some reason.  Message him on here or post in the pool thread.

There was that whole thing where Kano had talked to someone who had an S9 before they were technically released and it was sending an extraneous command at connection that was causing it not to work on the Kano pool.  I don't know if you could see it in the logs at startup or not.  But it seems within the realm of possibility that if this one did not have the firmware updated before being shipped it may be configured to use that extraneous command at connection which would prevent it from working on Kano CKpool.  In that case then theoretically speaking, a firmware update should fix it.  However based on the intermittent bricking reports from S7 firmware updates I think I would be certain that was the issue before going down that road.  

Did you use multiple accounts to buy 11?  Did you buy more than 11?

Also, does anyone have a link to the spec sheet on the BM1387?  I can't find it on the site but I suspect it's there somewhere.

Well these batch 1 experiences don't sound very encouraging. 

So does this suggest that the S9's will underperform on Kano (or maybe everywhere)?  And why did they rename cgminer to bmminer?

@E how often are you seeing this?

Being able to see the individual blades' performance opens up the possibility of combining good or bad performing blades into a single unit and then clocking the unit appropriately for the blades (presumably voiding the warranty in the process though).

@yxt have you tried downclocking at all to see what happens to the blades that are not performing as well?



Also out of curiosity, has anyone from batch 2 or 3 received a shipping notification?  I am curious if batch 3 really is going to ship before batch 2.

I have some of the Sinewave Line Interactive models.  I don't use them for always on though, miners go on the NCL bank and get turned off after just a few minutes if the power goes out and stays out.  Servers are on the main bank.  But what is super cool about having them is you can remotely power cycle the NCL bank as long as you have access to a computer on the same network.  So if I am away and a miner acts up and I remote in and still can't make it cooperate I can power cycle it which pretty much always brings it back to life.

Only once out of all of my orders through UPS going back to S1 did they charge me a fee (it was on an S7).  I called a bajillion people at UPS until I found someone who reversed it in their system but it happened about an hour before the driver came so he still insisted on a check to leave the package with me.  I did however get a refund check mailed to me from UPS about a month later.

I use blockchain wallet for my mining payouts but blockchain wallet isn't great overall.  It is convenient.  You just have to make sure that when you send all those little mining payouts from the blockchain wallet to a real wallet that you add enough fee to get it picked up.  And with blockchain wallet you get no real idea of the kb size of the transaction so you just have to guess at the fee size.  I have had transactions get stuck for literally 10 days because I didn't include enough fee.  Although maybe the new version of their wallet does a better job of calculating a fee for you?  Not sure on that point.  I always did manual fees on the old version of the wallet and haven't tried the new version yet, I just saw where they offered it when I logged in last.

I have a VM that is usually turned off that I run a couple different "lite" wallets on where I store the lion's share of my coins.  I fire it up when I want to spend some or I need to get new deposit addresses to send my mining rewards to from blockchain.  The VM does nothing else so I consider it secure enough.  Plus VM's are easy to backup.

Call me waiting to get drunk too then.

It's feast or famine around here...