Hacking KNC Titan / Jupiter / Neptune miners back to life. Why not?

[CNoteFan]

Stock voltage should be fine. At this point there is not a lot to be gained banging on the Neptunes. Hash rates and such are gotten by using the APIs from BFGMiner.

C

Thanks again.  Yeah, I realize they aren't really profitable.  A friend brought them over and it's difficult to watch specialized hardware sit idle.   I have some BFL's, Antminer S1's & S3's, over 80 Gridseeds and some KNC Neptunes.  

Have you ever made any instructional/educational videos regarding electronics?  

You must not pay for power =P

Hah.  I didn't say I am running them.  Actually, I only run the Gridseeds in scrypt only mode.  The Neptunes are new to me so I'm interested for the time being.  I've actually been able to get them to mine at a tiny profit. 350Gh/s @ 205 watts.  I'm contemplating having them available for rent on miningrigrentals.  If I leave no mining pool set up for myself, then they will sit there idle drawing about 25 watts and when someone rents it, it will generate some heat for the house during the winter.

I can't believe those Neptunes don't have anything in between the DCDC's and the aluminum 'E' plate (whatever they call that huge chunk of aluminum used to keep the heatsink in place.)  On the Titans, in videos I've seen, there is a heat sink transfer pad.

[1714003899]

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[1714003899]

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[Xeon_Xeon]

I just plugged the numbers into whattomine.com for my KNC Jupiter with the current numbers.................holy crap it's profitable!!  

Per    Pool Fee    Est. Rewards    Rev. BTC    Rev. $    Cost    Profit
Hour    0.000000    0.000004    0.000004    $0.07    $0.06    $0.01
Day            0.000000    0.000103    0.000103    $1.58    $1.46    $0.13
Week    0.000000    0.000719    0.000719    $11.07    $10.19    $0.89
Month    0.000000    0.003082    0.003082    $47.46    $43.65    $3.81
Year            0.000000    0.037500    0.037500    $577.46    $531.08    $46.38

[lightfoot]

Holy crap. Are neptunes positive?

[tommy1033]

Hello , do any know if there is an easy fix for cubes that makes the titans just restart ? got 2 of those "funny" cubes
also got some strange cubes showing low current on some dies and some cubes with completly dead dies is there a easy fix for this ?
i was stupid enough to buy 12 titans and payed way to much for them :/

[helipotte]

Holy crap. Are neptunes positive?

Power cost in $ + watt per Gh stays same + Bitcoin moon = Yup, Neptunes are indeed profitable again!

[Xeon_Xeon]

Holy crap. Are neptunes positive?

3300 GH/s and 1950 watts , is this correct?

 I just picked the first google search result that I found.


Soooo plugging in those numbers on whattomine.com for Bitcoin.



Per              Pool Fee    Est. Rewards    Rev. BTC             Rev. $                   Cost             Profit
Hour    0.000000    0.000022    0.000022    $0.34                  $0.19    $0.15
Day            0.000000    0.000522    0.000522    $8.15                  $4.54    $3.61
Week    0.000000    0.003651    0.003651    $57.07               $ 31.78    $25.29
Month    0.000000    0.015648    0.015648    $244.58              $136.19    $108.39
Year            0.000000    0.190383    0.190383    $2,975.69    $1,656.95    $1,318.74  
 

Most definitely.  

Still does not want to format correctly, but the info is easy to see.


Damn as long as the price keeps going up before the next difficulty increase its $$$$$ time for alot of the older miners,!!

[/list]

[lightfoot]

Well, looks like I am back in Neptune business. Maybe I'll fix all of those oddball boards I have here and bring them up again. They do work well with water cooling blocks.....

[lightfoot]

Hello , do any know if there is an easy fix for cubes that makes the titans just restart ? got 2 of those "funny" cubes
also got some strange cubes showing low current on some dies and some cubes with completly dead dies is there a easy fix for this ?
i was stupid enough to buy 12 titans and payed way to much for them :/

Depends. If you have an ohm meter can you check resistance between pins 4, 6, and 8 to ground (pin 10). If pin 6 is low (under 100 ohms) the cube is bad. If pin 8 is low I can fix that, likewise if pin 4 is low.

Remember: Don't run them too hard to burn the plugs and always power down before removing any ribbon cable anywhere. And with litecoin going up in value you never know.....

[tommy1033]

Hello , do any know if there is an easy fix for cubes that makes the titans just restart ? got 2 of those "funny" cubes
also got some strange cubes showing low current on some dies and some cubes with completly dead dies is there a easy fix for this ?
i was stupid enough to buy 12 titans and payed way to much for them :/

Depends. If you have an ohm meter can you check resistance between pins 4, 6, and 8 to ground (pin 10). If pin 6 is low (under 100 ohms) the cube is bad. If pin 8 is low I can fix that, likewise if pin 4 is low.

Remember: Don't run them too hard to burn the plugs and always power down before removing any ribbon cable anywhere. And with litecoin going up in value you never know.....

ill take a look on that tomorrow , how much do you take for each board repair  ?
looks like they are dead only getting about 230 ohm resistance between 4 and 10.

[CNoteFan]

I've been running Neptunes underclocked for a couple months now at a profit.  I'm only using 1 cube at the moment running at 350Gh/s @ 200watts (this includes control board).

Here's the settings:
Die Voltage     Die Clock
-------------     -------------
-0.0586v        250Mhz
-0.0659v        250Mhz
-0.0659v        250Mhz
-0.0659v        250Mhz

Great thread!

[FabioNeptune]

Hi everybody!

I have 5 Neptunes connected to a board that, following yours suggestions, it seems faulty.
When i turn it on i can't see anything on the LCD Screen and the led light close to the LCD doesn't flash.
When i can access to this board (i can do it cause i remember the IP) i don't see any of the Neptunes connected to this board.

pleeeeeasseeee i'm going mad, heeelp meee  

[lightfoot]

Hi everybody!

I have 5 Neptunes connected to a board that, following yours suggestions, it seems faulty.
When i turn it on i can't see anything on the LCD Screen and the led light close to the LCD doesn't flash.
When i can access to this board (i can do it cause i remember the IP) i don't see any of the Neptunes connected to this board.

pleeeeeasseeee i'm going mad, heeelp meee  

Try unplugging all the neptunes from the board with the power off, then try just the board. See if the screen comes up. If it does power down and plug in neptunes one at a time powering up to test.

Either one will short the board or the board is bad. If bad I can fix.

[funktrust]

Hey guys,

Nice to meet you all.

I decided to pull my Titan out of the garage where it has been sitting for the past 2 years to start mining LTC. I'm trying to get it started and mining over at litecoinpool.org

I can't for the life of me get the cubes hashing, controller board seems fine, I've just got 1 cube plugged in to test and it recognises it via the controller board, BFGMiner is running fine, but the cube is not hashing. I've upgraded to Firmware 2.0 but no luck.

Heres a screenshot of the miner status.
https://imgur.com/a/aAJ7D

Just wondering if anyone has had a similar issue before?

[Searing]

Hey guys,

Nice to meet you all.

I decided to pull my Titan out of the garage where it has been sitting for the past 2 years to start mining LTC. I'm trying to get it started and mining over at litecoinpool.org

I can't for the life of me get the cubes hashing, controller board seems fine, I've just got 1 cube plugged in to test and it recognises it via the controller board, BFGMiner is running fine, but the cube is not hashing. I've upgraded to Firmware 2.0 but no luck.

Heres a screenshot of the miner status.
https://imgur.com/a/aAJ7D

Just wondering if anyone has had a similar issue before?

well..you may be late to the party....I think 1 titan for me has made me ....well..I'm too embarrassed to say....but I'd guess in 2 years....about 1,000 LTC ...now like us you probably

would not have held any..but even if you did like us and swap'd it for equipment (bitmain) you'd be well in the game by now or converted it to BTC

sorry about informing you on this..but the shock of you pulling out a titan unused after 2 years is well ..shocking and you will get replies on this

mostly of the 'cough bullsh*t" variety

wait, I have a miner almost exactly 3 years old as of Feb 1st...it made me almost exactly as of today almost 2,000 LTC (about 1,983)

now mine is 1 year older but looks like you'd be well over 1,200 or so LTC by my reckoning...

from now on any suspect equipment get on here and poll us crypto nerds

[FabioNeptune]

Thank you so much Lightfoot!
I've tried to turn on just the board and i still have the same problem, LCD doesn't come up and the led light doesn't flash.
I don't know if the board is broken because i'm able to connect my browser to it trough the usual IP address, but i really want to fix it so if you say that the board is broken i'll send it surely to you. how can we organise the shipment with return?

If you have a board that works fine can we think to buy that one instead of fixing mine?


Thank you a lot for your support mate!

Hi everybody!

I have 5 Neptunes connected to a board that, following yours suggestions, it seems faulty.
When i turn it on i can't see anything on the LCD Screen and the led light close to the LCD doesn't flash.
When i can access to this board (i can do it cause i remember the IP) i don't see any of the Neptunes connected to this board.

pleeeeeasseeee i'm going mad, heeelp meee  

Try unplugging all the neptunes from the board with the power off, then try just the board. See if the screen comes up. If it does power down and plug in neptunes one at a time powering up to test.

Either one will short the board or the board is bad. If bad I can fix.

[lightfoot]

Thank you so much Lightfoot!
I've tried to turn on just the board and i still have the same problem, LCD doesn't come up and the led light doesn't flash.
I don't know if the board is broken because i'm able to connect my browser to it trough the usual IP address, but i really want to fix it so if you say that the board is broken i'll send it surely to you. how can we organise the shipment with return?

If you have a board that works fine can we think to buy that one instead of fixing mine?

I'll drop you a PM with the shipping information. The FPGA chip is what's bad and although I have a spare board here I would still need your board as a core so I can continue to have a spare.

But they are fix-able. Bit of a job to swap a 324 pin .3mm BGA grid and a QFN power controller, but do-able.

C

[Luke-Jr]

I have an old Saturn I'm trying to get running for heating purposes. Dug out an old 1000W modular PSU, and borrowed a few modular PSU cables from another PSU or two... But with the 4-pin molex power connected to the control board, the PSU immediately dies. Without it plugged into the control board, the PSU fans spin up fine. Any ideas? :/

[lightfoot]

I have an old Saturn I'm trying to get running for heating purposes. Dug out an old 1000W modular PSU, and borrowed a few modular PSU cables from another PSU or two... But with the 4-pin molex power connected to the control board, the PSU immediately dies. Without it plugged into the control board, the PSU fans spin up fine. Any ideas? :/

Hm. The controller board with the Beaglebone on it? I've heard of the titans blowing out their Pi's because Pi's are junk, but haven't really run across many BBB's with shorted power converters.

Try pulling the BBB from the controller and see if it at least powers up. If so get a new BB, swap SIMs, and rock.

They make good heaters, I have a pair of Monarchs running to keep a bedroom warm. And the things are breaking even...... :-)

[keyzersoze]

Hi guys. I have a knc jupiter, October batch that I fired up yesterday for about 10 minutes, and it was hashing fine.
Then I went to restart it, and it won’t restart again. Green and read light comes on 3 times and then nothing.
Any ideas?

[Searing]

Hi guys. I have a knc jupiter, October batch that I fired up yesterday for about 10 minutes, and it was hashing fine.
Then I went to restart it, and it won’t restart again. Green and read light comes on 3 times and then nothing.
Any ideas?

you may have to reflash the SD card...or that is what I'd check first.....I think you can try a factory reset as well....

(been so long...I never did a factory reset..on such confusions I just did a new scandisk 8gb flash...and it then revived..

happened a couple times, If I remember right)