Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 215. (Read 527809 times)

So now that batch 6 is sold...what can you even buy, from anywhere ? 

Theres pretty much no new consumer miners available now.

nov 23-dec 3  i think...?

anyone remember when they said they will ship batch 4-5 ?

Was great on the nicehash side. I had just fired up a bunch of s3's at nicehash and a few hours later the payout went stupid high.

It was first dropped when they did the S5 which was the first mainstream Miner from Bitmain that used "String Power" (First trialled in the S3++) The "Benefit" is that the DC Converter Modules are done away with which reduces cost and improves efficiency. Also you can adjust the supply voltage as bbOOmm has just described for over & undervolting. 

Rich

I'm guessing there was a converter in the other models? I wonder why they dropped it in the S7.

ALSO TO NOTE WITH THE S7 ....

There is no DC to DC conversion in the S7's. So what voltage your "feed" your S7's directly correlates to the chip voltage and hashing power.

SO, ~~AFTER~~ your Bitmain warentee expires and you want to experiment. Keep this voltage adjustment knowledge handy.... over clocking with the ease of overvolting just might lead to some interesting results. ( Either poof to the MOOOON hashing ... or POOF, you let the magic smoke out of it )

Do not attempt if you are not familiar or comfortable working around high voltage. Touching the wrong area can result in shock, burns and even death!!! USE ESD PROTECTION when the device is not powered up, but NOT when the device is powered up.


All power supplies are built differently, some have "fixed" voltage regulation, some have a slightly variable voltage regulation. The DPS-1200FB is one that is slightly variable.

Unplug the power supply and clip into your ESD protection.
Remove the 4 screws that hold the cover on.
Tilt back the cover, wiggle and pull down to remove, you will see the tabs are T shaped and hook into the slot.
When the cover is off, fold back the fishpaper insulation.
The now exposed side board will show 3 very small potentiometers (silver in color near the top edge of the board)
The voltage regulation potentiometer is the far right one, that is the one you need to tweak, but first you need to power it up under load.

Once you see where and what you need to do, unclip from your ESD protection and plug in the power supply ( in my case I used 240VAC )

NOTE --- The power supply is HOT now ... DO NOT START TOUCHING CIRCUIT BOARDS WITH YOUR FINGERS OR TOOLS... HIGH VOLTAGE IS PRESENT!!!

If you do not have a resistive load that can handle continuous duty, use a miner as the load. I'd recommend at minimum, a 50% load of the power supplies maximum rated output.

Once your load has stabilized ( miner up and hashing ),take your DMM test probes and stick them into the back side (wire side) of one of the molex connectors, One row of 3 pins is positive, one row of 3 pins is negative. Now take a micro screwdriver - I prefer a non-conductive / non-inductive screwdriver, but if you don't have one, a cheap ass dollar store flat blade eye glasses screw driver will work. BE VERY CAREFUL, THERE ARE SMT COMPONENTS IN VERY CLOSE PROXIMITY TO THE POTENTIOMETER. IF THE BLASE SLIPS OFF THE POT, YOU COULD SHORT OUT AGAINST ONE OF THE COMPONENTS NEAR BY. Take the screwdriver and rotate the far right potentiometer very slowly while watching your DMM. Adjust till it reads 12.25V. Stop, remove the screwdriver, and let it sit for a minute while watching the DMM voltage reading. If its looking good, as in where you want the voltage to be, unplug the power supply from the wall outlet, clip back into your ESD protection and re-assemble. BE SURE TO GET THE FISHPAPER ~~UNDER~~ THE CENTER SCREW TAB AND THAT IT REMAINS THERE WHILE YOU CLOSE THE LID.

Once it is fully assembled, power it up again, test the output under load with the load miner to ensure it is functioning properly.

It is then ready for use.

Make a label, a sticker, or write on the cover the voltage at what % load you calibrated at.

I should also note - DO NOT USE AN OVERCLOCKING SETTING ON THE MINER WHEN CALIBRATING. I noticed that when I used an S5 as a load and the miner was overclocked, the miner was far more sensitive to the voltage fluctuation of adjusting and would stop mining, giving you an UNLOADED DMM voltage reading.

RING A DING DING! Rich nailed it.... that is exactly where I learned to do this, I just could not remember where it was that I seen the pics.

The Isolation tips are also of good interest, especially when you are using multiple power supplies per miner. I did the simple isolation, disconnecting the ground lug ( and stuck heat shrink insulation over the lug )

LOL .... Paycoin.

I mined that coin.... I also dumped for a profit just below its peak price while everyone else was waiting for that $20 price floor ....and before the stench of the scam make everyone nauseated

LOL .... Paycoin.

I mined that coin.... I also dumped for a profit just below its peak price while everyone else was waiting for that $20 price floor ....and before the stench of the scam make everyone nauseated

Here's a handy picture from rchelination.com to go with the bbOOmm text.




You should be able to adjust from 11.7V to 12.7V

Rich

I remember when paycoin popped up last year. Nicehash payout went to the moon.
I just sold five s5's that were at 15 found blocks each on nicehash.

You wouldn't happen to be down in Florida and advertised on Craigslist with S5's and S7B1's for sale???

If so.... WHERES MY TRACKING NUMBER FOR THE S5 I PURCHASED and DID IT SHIP?? 

Do not attempt if you are not familiar or comfortable working around high voltage. Touching the wrong area can result in shock, burns and even death!!! USE ESD PROTECTION when the device is not powered up, but NOT when the device is powered up.


All power supplies are built differently, some have "fixed" voltage regulation, some have a slightly variable voltage regulation. The DPS-1200FB is one that is slightly variable.

Unplug the power supply and clip into your ESD protection.
Remove the 4 screws that hold the cover on.
Tilt back the cover, wiggle and pull down to remove, you will see the tabs are T shaped and hook into the slot.
When the cover is off, fold back the fishpaper insulation.
The now exposed side board will show 3 very small potentiometers (silver in color near the top edge of the board)
The voltage regulation potentiometer is the far right one, that is the one you need to tweak, but first you need to power it up under load.

Once you see where and what you need to do, unclip from your ESD protection and plug in the power supply ( in my case I used 240VAC )

NOTE --- The power supply is HOT now ... DO NOT START TOUCHING CIRCUIT BOARDS WITH YOUR FINGERS OR TOOLS... HIGH VOLTAGE IS PRESENT!!!

If you do not have a resistive load that can handle continuous duty, use a miner as the load. I'd recommend at minimum, a 50% load of the power supplies maximum rated output.

Once your load has stabilized ( miner up and hashing ),take your DMM test probes and stick them into the back side (wire side) of one of the molex connectors, One row of 3 pins is positive, one row of 3 pins is negative. Now take a micro screwdriver - I prefer a non-conductive / non-inductive screwdriver, but if you don't have one, a cheap ass dollar store flat blade eye glasses screw driver will work. BE VERY CAREFUL, THERE ARE SMT COMPONENTS IN VERY CLOSE PROXIMITY TO THE POTENTIOMETER. IF THE BLASE SLIPS OFF THE POT, YOU COULD SHORT OUT AGAINST ONE OF THE COMPONENTS NEAR BY. Take the screwdriver and rotate the far right potentiometer very slowly while watching your DMM. Adjust till it reads 12.25V. Stop, remove the screwdriver, and let it sit for a minute while watching the DMM voltage reading. If its looking good, as in where you want the voltage to be, unplug the power supply from the wall outlet, clip back into your ESD protection and re-assemble. BE SURE TO GET THE FISHPAPER ~~UNDER~~ THE CENTER SCREW TAB AND THAT IT REMAINS THERE WHILE YOU CLOSE THE LID.

Once it is fully assembled, power it up again, test the output under load with the load miner to ensure it is functioning properly.

It is then ready for use.

Make a label, a sticker, or write on the cover the voltage at what % load you calibrated at.

I should also note - DO NOT USE AN OVERCLOCKING SETTING ON THE MINER WHEN CALIBRATING. I noticed that when I used an S5 as a load and the miner was overclocked, the miner was far more sensitive to the voltage fluctuation of adjusting and would stop mining, giving you an UNLOADED DMM voltage reading.

 ...........................went to the moon.
I just sold five s5's that were at 15 found blocks each on nicehash.

Nicehash doesn't do merged mining.  Someone rented your hash and pointed it to another SHA-256 coin pool most likely.

You should add a disclaimer:  "If you don't know what you're doing, you can easily be seriously injured including death"