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Topic: (Review/Guide) Antminer S15 27.0 Th/s, 1600 W Bitcoin (SHA-256) ASIC miner (Read 1560 times)

legendary
Activity: 3220
Merit: 1220
No what is true is one guy blew 2 of them up feeding 245 volts to them.

No one has had any other issues and reported them here

I've had two that have had their PSU's die, out of a batch of 10. So 20% PSU failure.

Outside of warranty of course  Roll Eyes

Actually the miners were outside of warranty but the PSU's have a 1 year warranty so were still within.

However after they are shipped to Bitmain US repair office, they reported back that there were faults on the hash boards as well.

I suspect that when the PSU goes it takes out the hash boards as well.

Anyway I had to pay for the hash board repairs and shipping but the PSU should be a free replacement.
full member
Activity: 303
Merit: 105
I got answer from Brainacs recently:

Quote from: Braiins
Braiins OS is currently supported only on Antminer S9 (S9, S9i, S9j) and Dragonmint T1.
Other devices are also on our roadmap, but we do not have any ETA for you at the moment.

Thanks for your understanding.
Adam [Support Team]
Braiins & Slush Pool

There is possibility that they will miss 15 series. It is lot more profitable for them to go directly on 17th series.
legendary
Activity: 2464
Merit: 1710
Electrical engineer. Mining since 2014.
Is there any custom FW for T15 or S15?

I haven't encountered any custom fw yet,
but I would keep.following this project if they add a support for the S15:
https://braiins-os.org/
full member
Activity: 303
Merit: 105
Is there any custom FW for T15 or S15?
legendary
Activity: 2212
Merit: 2365
EIN: 82-3893490
Anyone tried adding extra fans to these? Unlike the newer models from bitmain these only have two push fans at the front.

I want to do that with my T15 but have not gotten around to it. it is my only miner that does not vent directly to outside.
legendary
Activity: 3220
Merit: 1220
Anyone tried adding extra fans to these? Unlike the newer models from bitmain these only have two push fans at the front.
full member
Activity: 1022
Merit: 221
We are not retail.
maybe check software section or ask there?
full member
Activity: 303
Merit: 105
It looks like Bitmain released new FW for S15/T15. Release date is 07.05.2019, but firmware description is same like previous version. Does anyone tried new firmware?
legendary
Activity: 4256
Merit: 8551
'The right to privacy matters'
Is it true that Antminer S15 has serious issues with its PSU?

No what is true is one guy blew 2 of them up feeding 245 volts to them.

No one has had any other issues and reported them here
jr. member
Activity: 40
Merit: 1
Is it true that Antminer S15 has serious issues with its PSU?
legendary
Activity: 2212
Merit: 2365
EIN: 82-3893490
Just don't neglect the airflow around the miner, it is important. Ducts should not be directly attached to the miner in my opinion, but to a box where the miner resides inside instead.

my miners have considerable airflow around them, they are not in a box per se unless you count the entire building as a box Smiley - they are spaced about 18 inches apart from one another and there are 20 miners in an 8' by 8' room that has two 23" intake fans blowing into the room there is also a 5k btu AC unit and a dehumidification system. Miners stay around 60 C to mid 80 C.
legendary
Activity: 2030
Merit: 1568
CLEAN non GPL infringing code made in Rust lang
i also notice no exhaust fans - I will have to come up with something on the 3d printer so I can hook these to my exhaust ducts

Just don't neglect the airflow around the miner, it is important. Ducts should not be directly attached to the miner in my opinion, but to a box where the miner resides inside instead.
legendary
Activity: 2212
Merit: 2365
EIN: 82-3893490
let us know once it sets up.

will do - I will take the measurements this weekend - should be pretty straight forward.

currently this is how they are - you can see the 4" goes from back of miner to the 6" and then with a 12" tube to outside. Once done I will be insulating the walls as well to reduce heat coming in from outside.

legendary
Activity: 4256
Merit: 8551
'The right to privacy matters'
I will go with the square off the back of the miner to 6" and see how that works.

let us know once it sets up.
legendary
Activity: 2212
Merit: 2365
EIN: 82-3893490
I will go with the square off the back of the miner to 6" and see how that works.
legendary
Activity: 4256
Merit: 8551
'The right to privacy matters'
maybe 7 inch they do exist.

also both the s15 and the t15 have low power settings  which could help if the six inch duct is too small.
legendary
Activity: 2212
Merit: 2365
EIN: 82-3893490
If I had room to expand the holes to 8" i would but they would then overlap and I cant have that.
legendary
Activity: 4256
Merit: 8551
'The right to privacy matters'
it is a friction issue due to smaller duct.

lets say the rectangle is 6 x 12 = 72 sq inches

a 4 inch duct is  only  4 x 3.14 = 12.56 sq inches  not likely to work  as a guess 95% no way

and a 6 inch duct is 9 x 3.14 =  28.36 sq inches  may work  maybe I would try it out

also the length of ducts cause friction  so shorter the better.

I don't remember the formulas for figuring it out.

you may find  the 6 by 12 rectangle  ends up morphing into a 7 inch duct  they do exist

that would be 6 x 12 = 72 rectangle

and 12.25 x 3.14 = 38.465 7 inch duct  

round duct I use pi x r x r   or 3.14 x 3.5 x 3.5 = 38.465
legendary
Activity: 2212
Merit: 2365
EIN: 82-3893490
The reduction in size from the rectangle to the tube may be too much and cause overheating.

The tube being short under three feet helps.

The tube length is 12" exactly from the 6" opening to outside. I just need to go from the back of the miner to the 6" opening on the duct. And with what you have said and my own thinking I will remove the 4" to the 6" adapter and go from the square directly to the 6" duct opening with a 12" tube to outside.  or do you think that would be too restrictive still?

Yeah, don't go to 4" then to 6" it will restrict your flow, go straight to 6".

agreed - based on what everyone is saying. will work on a design this weekend and during next week around my regular work schedule.
member
Activity: 128
Merit: 36
Yeah, don't go to 4" then to 6" it will restrict your flow, go straight to 6".
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