Hi All - No luck on getting this figured out, but I really really appreciate all the responses.

I don't have the JSON and using blockchain.info's online recovery isn't working with 16 word seed phrases.

I was dumb years ago and wrote a seed phrase down, but with no info about what the wallet is.

It's a 16 word seed where the 13th word is custom. My hunch is a weird HD wallet on blockchain.info, but I don't see where I can recover with 16 words. I've reached out to their support. It could also be metamask or myethereum wallet, but looks like those don't work. MEW didn't work. I'm positive it is not a hardware wallet.

I don't think there is much crypto on this wallet (somewhere between $0 and $1k at 2017 prices), but I will give the person who helps me solve this mystery 10%.

We have 300 of the APW8_16.32V-20.04V PSU's that are dead, and Bitmain isn't selling them anymore.

30% of our S15 PSU's have died (or reboot after a few seconds) which seems extremely high compared to our other miners.

Does anyone have experience fixing the most common issues with S15 PSU's? We don't have the experience on site to do more advanced repairs.

Or has anyone worked with a reputable repair shop I should reach out to.

Thanks for any help 

How are others thinking about the week between May 12 halving and ~May 19th?

With adjustments taking ~14 days and the next one coming on May 5th, we won't have a difficulty adjustment for the first week of the halving.

Personally I'm assuming diff will fall a little on May 19th, but I may be turning off some machines that first week depending on price.

That temp control module looks great. That is essentially what we are doing with automating the fans, but using a temp sensor we already have for temp alerts: https://store.wirelesstag.net/products/wireless-tag.


Fair to point us to a professional at our size, and maybe we will go that way, but I wonder if a professional is going to make up for their cost. The downtime and low power cost us around $10,000 this summer. We believe we can cut that by ~75% with some low cost improvements.

So on the cooling side it's something like this: $2500 per summer + low cost solution + labor to monitor and handle heat shutdowns vs. hiring a professional + work and materials to implement that. One reason for posting is to learn if there are a number of other efficiency improvements to be made that would warrant paying for a professional.

We have made it through summer running 1200 S15's. Had to go low power and shut off the mine when temps got over 92F. We now have some downtime and are looking for cost effective efficiency improvements + doing some risk management.

Here are a few projects we have completed:
- Improved security
- Failover internet
- Failover power/UPS

We are now working on automating exhaust fans based on facility temperatures.

We're fairly new to data center management, and I'm curious about projects others have done to improve efficiency, cooling, automation, etc.

I would love to trade ideas and potentially hire someone to audit our mine for cooling and efficiency improvements.

Thanks! I will look into these cabinets.

And Steamtyme, those PDU's look great, but we have a 415V feed.

Anyone have connections to a company making good mining PDU's that ships to the US?

Something that takes 3 phase, 415V and can power 25+ S17's?

We've been unhappy with our current supplier, but it seems like most major data center PDU suppliers don't make anything that high density. Thanks in advance for any help!

"almost no risk" other than the $200k of sunk cost into solar panels, the time spent, and all the non-miner hardware and setup costs.

It seems like running ASIC's for deep learning is the best backup plan I've heard of.

I'm talking about a worst case scenario (For example it becomes illegal in a mining operations area).

But yes I'm curious what non-mining revenue streams people are pursuing or would pursue.

For those who have put major investment into land, facilities, and power contracts, what is the backup plan to save your investment if cryptocurrency becomes unprofitable?

I know any mining hardware investment is out the door. I'm more curious about what non-mining operations people plan to move into. Server farm?

Context: I'm exploring building out a smaller 100kw operation, but want to have a backup plan for my investment if I'm stuck with 100kw of cheap power, facilities, and land.

(First post so apologies if this isn't the right area mods. I searched for similar threads and didn't see anything.)