I have around 75 of A1246 and 1166pros I bought this year. I have had nearly a 25% failure rate on the PSUs. The Avalons being sold this year are junk. So I've bit the bullet and bought a bunch of spare PSUs which has fixed most of the issues.

FWIW your blinking red light on the PSU itself definitely means the PSU has an issue. Usually if you keep running it it will eventual pop/fail and not run anymore at all.

This thread is oddly absent the key value of the huge mining network and that is bitcoin's ledger (blockchain) security and finality. That is what the huge mining hashrate gives you. Any sort of attack that tries to rewrite the blockchain has to contend with a mining network larger than any computing network on earth so its nearly impossible to attack. If half the miners disappeared tomorrow, yes the difficulty would adjust in a few weeks to become less difficult to find blocks and block time would get adjusted back to 10 minutes.

And then that day, the network would be half as hard to attack and take over the proverbial 51% and attack the ledger.

Seems to me bitcoin has clearly evolved to a long term store of value as the most important use case currently. That use case requires super high security that the blockchain and money supply stays safe and the giant and growing mining hashrate is the best thing to ensure that.

FYI - I got the new Goldshell LT5s to work. Not sure what the issue was but their UI is kinda complicated to figure out but all working now.

Okay thanks. I'll double check everything (including cases, etc.) and send an email with the details if it still doesn't work. I've never had an issue before with L3s, etc. and this is my first LT5 to try.

I can't get a new Goldshell LT5 to work on the pool. It says the pool is invalid. I can get it to work on other pools. Have you looked at the LT5 compatibility on the pool?

Compelling argument. Thanks for elaborating!

UPDATE: I remembered I had a dual metered PDU that reports amps (in whole numbers) that I don't use that readout anymore.  So I tried one of the S17s on that so I could measure each cord separately.  It measured exactly 5 amps each on Turbo mode.  Exactly being that it only reports round numbers.  At my voltage that is around 1150 watts per cord.  But I'm sure it is 5.x not just 5 amps.  But either way, it seems to balance the load very close between the two cords.


I'd like to see your calculation/thinking. 

By my profit model turbo mode makes sense currently.  But I am working with 5.4 cent electricity so that obviously will make a difference.  Simple Cryptocompare shows $8.50/day for Turbo, $7.84/day for Normal, $6.24/day for Low Power mode.  So Turbo currently makes the most profit.  I have wondered if the extra wear and tear is worth it and for that extra 8% profit and maybe not. 

As energy price goes up then it would flip to where normal would win out and then low power mode.

I have metered smart switches for each circuit-PDU so the only way I could measure each cord would be to connect to two separate circuits which I'd rather not risk. Otherwise I'd need to measure with my amp-meter with a split cord which I don't have. If I can figure out how to safely do it I'll let you know.

Agree on the pools - I was just being lazy in setting these up last night in a hurry.  I typically have 2 different pools list for most of my machines.  I seldom bother with a third.

And on the orientation of the miners, I hadn't seen a direct recommendation of vertical or flat but now that I have these machines, I planned to rearrange my shelving to allow vertical because it will let me fit the machines better in my hot box.  But good info on the heat flow, I'll pay attention when I rearrange them to see what the temps do.

Got my first S17 Pro (50TH model) up and running.  As smooth of a startup as typical with Antminers.  Just plugged in both power cords and viola.

I've only tried "normal" mode so far and I'm getting 51 TH on average and about 2050 Watts measured with my smart switch.  So right at 40 J/TH efficiency.  The noise seems similar to other antminers.  Not noticeably louder to me but then again I have 40 antminers running in my garage so I probably wouldn't notice.  And I haven't tried turbo mode.

Edit1: Turbo mode results: 57 TH, 2500 Watts - 43.8 J/TH.  Pretty impressive! And not really any louder that I can tell.

Edit2: Low power mode: 40 TH, 1540 Watts - 38.5 J/TH.

Below is a pic of it and the dashboard.  I'll be trying the other modes when I get a chance.

https://imgur.com/k6aMzDf
https://imgur.com/I2fRpwD

Mine arrive tomorrow.  Hopefully will have them up and running tomorrow night.

I got 3 of the 50 TH Pros.  While more than I was hoping for still worth it IMO.

Just updated one circuit (4 S9s).  I have heavy duty smart switches with live wattage on my circuits and saw an immediate drop in wattage by about 13%.  Nice!

Hashrate looks to be unchanged.  I'm on Slushpool.

aha! okay, well the numbers make sense then!  Thanks!

I still wish it was what I was looking for but at least I understand what it is

How is "profitability" calculated? it doesn't make any sense to me.  Some examples from the ASIC tab today using 0.075 $ power:

Bitcoin: Revenue is showing as $6.46, profit is showing $3.74 and the profitability is showing as 100%.  There isn't any math I can figure where profitability is 100%.
Siacoin: Revenue showing 3.93 and profit is 1.59 and profitability is 60%. 

The way I would normally look at profit margin or profit ratio would be profit over power so in the case of bitcoin it would be $3.74/($6.46-3.74)= 1.37 so a 1.37 or 137% profit ratio of net revenue over power.  I have no clue where the 100% comes from.

Can someone help explain or point to a formula that explains the profitability calculation on the site?

Yes, that is my experience.  But having said that, my X11 was very sensitive to needing to stay cool which was a pain.  (Unlike my antminers which don't seem to care, I can run them hot as heck.)

UPDATE and more info:

So tonight, everything started up just fine after still being shut down during peak price hours.  So based on that, I'm quite sure yesterday I must have had a condensation problem causing the antminers to have misc. electrical/connection problems.  Yesterday was very different weather than today.  I'm in southern FL so it definitely isn't getting cold.  But we had tons of rain the last few days so I think when I turned the hot miners off but kept my exhaust blowers going (my setup is in the garage) it was pulling in humid air so as the miners cooled to ambient they must have gotten moisture in the control cards, etc.  Today it wasn't raining anymore so it wasn't nearly as humid.  When I turned things on everything came up perfect and started hashing away no problem.

My solution next day will be to switch off the exhaust blowers right when I shut down the miners so it will stop airflow and even keep residual heat in the machines until I turn them back on.

Just additional FYI on my setup if anyone is interested:
- Have ~40 antminers (20 L3, 7 S9, 4 A3, 10 D3)
- Have 8 220 V 30 amp circuits so I can't quite run all my machines at once so I swap them out based on profitability.
- Started at the beginning of 2017 and have built out 3 "mining boxes" in my garage which have exhaust blowers venting through 12 inch duct through the attic out to the soffits to exhaust outside.
- Just got on a time of use plan so now my offpeak price is around 7.5cents/kwh which makes things way more profitable but I don't want to run during peak hours unless a particular coin profit margin over power is high enough.
- I also have some GPU units I run in the house and play around with different coins with those (currently mining Zcash)

I'm starting to schedule my Antminers to turn off and on to take advantage of time of use power price. 

I've noticed if they are down during the day and then I start them late in the night that they come up very buggy.  Many of the hashboards won't show up, temperatures are totally wacky, bad to no hashrate on some.  Then if I restart them after a few minutes they get better and everything starts acting normal.

Have others seen this? I'm wondering if maybe condensation is getting on the control boards during the day as they cool down (it has been very rainy and humid lately).  Any other ideas?

I had the same question a few weeks back and gave up on shutting down the mining on Antminers programatically.  I also sent a support question to Awesomeminer about it and they replied that for Antminers there isn't a good way to do it, the Antminers firmware/software will very stubbornly keep restarting the mining process.

So I opted for heavy duty smart switches instead.  Just got them running this week and just starting to try timing the off/on of my miners.  It's working but now I'm finding they don't do well starting up cold - they require a few restarts to get everything hashing/controlling right.

Thanks! I'll give it a try.