ANTMINER S5: 1155GH(+OverClock Potential), In Stock $0.319/GH & 0.51W/GH

[RichBC]

I had no success with the Nicehash firmware on my S5 so I just use the latest Bitmain release. Have had no problem with the S5 switching in and out of Nicehash, sometimes it happens 4 or 5 times a day without problem.

I thought you had to use the NH firware to set your miner up for rental at their site?  I've thought about setting mine up as a rental but I didn't want to use their firmware so I passed.

Nothing special is needed, all firmwares will work. There is a very small gain if you set the extranonce subscription but it's not esential and I have found setting it on my S5 causes problems when you want to set a value above which you want your miner to use nicehash, so I do not use it.


Rich

[VirosaGITS]

I have a S5 which sensors just keep going up and up and up, start at same temp from the other board and after a day or two its 20c higher. Laser thermometer says every chips are cool and i dont see any hot spot.

Anyone has a picture of the board that show where the sensor is? IIRC i can put thermal paste on it for the temp to go down? Maybe i'd get more leeway if its not 100% broken.

[RichBC]

I have a S5 which sensors just keep going up and up and up, start at same temp from the other board and after a day or two its 20c higher. Laser thermometer says every chips are cool and i dont see any hot spot.

Anyone has a picture of the board that show where the sensor is? IIRC i can put thermal paste on it for the temp to go down? Maybe i'd get more leeway if its not 100% broken.

Temp sensor IC is the one right in the middle with 8 legs, U1 - LM75A .




Rich

[VirosaGITS]

I have a S5 which sensors just keep going up and up and up, start at same temp from the other board and after a day or two its 20c higher. Laser thermometer says every chips are cool and i dont see any hot spot.

Anyone has a picture of the board that show where the sensor is? IIRC i can put thermal paste on it for the temp to go down? Maybe i'd get more leeway if its not 100% broken.

Temp sensor IC is the one right in the middle with 8 legs, U1 - LM75A .

http://www.slotforum.com/forums/uploads/1439724411/gallery_2150_2322_641456.jpg


Rich

Thanks, in lieu of this information, i lasered the sensors exactly. The top of the chips are one side 35C, other side 40C. Sound like a normal temp difference. I think its safe to assume the sensor is busted? (Software read 52C and 78C)

I dont think pasting it will do anything since its so cold. Maybe disable the over 80C overheat protection? Or is there a better trick?

[RichBC]

Thanks, in lieu of this information, i lasered the sensors exactly. The top of the chips are one side 35C, other side 40C. Sound like a normal temp difference. I think its safe to assume the sensor is busted? (Software read 52C and 78C)

I dont think pasting it will do anything since its so cold. Maybe disable the over 80C overheat protection? Or is there a better trick?

Have you tried plugging / replugging the data connector to the controller board, and then swapping the 2 boards to confirm that it is the sensor that is faulty rather than the connections to the sensor chip?

Rich

[zOU]

I have a S5 which sensors just keep going up and up and up, start at same temp from the other board and after a day or two its 20c higher. Laser thermometer says every chips are cool and i dont see any hot spot.

Anyone has a picture of the board that show where the sensor is? IIRC i can put thermal paste on it for the temp to go down? Maybe i'd get more leeway if its not 100% broken.

Temp sensor IC is the one right in the middle with 8 legs, U1 - LM75A .




Rich

check this:

Annoyed by the constant surging and whine of the fan on S5 ?,
Put small heatsinks on the two temperature sensor chips LM57A(8 pin chip at the center of the hashing boards)






Heatsink on the Temp sensor chip will lower fan speed to default low ~2.2Krpm.
 Do it for both the hashing boards and enjoy peace and quiet

[RichBC]

The heatsink mod is only any good if the sensor is working. Personally I would not do it as the temp sensor is already quite removed from what you actually want to measure which is the ASIC core temperature, this just isolates it even further from that.


Rich

[kenshirothefist]

If anybody is looking for a few second hand AntMiners S5 (3x):

https://asktom.cf/index.php?topic=1398532.0

[blindminer]

Sorry for my English.
What is this piece in antminer s5 board:



Is this a Capacitor? One of these are detached from my antiminer board's.
I thought  i must have just one x from the chain but it doesn't hashing at all.

[RichBC]

It is a decoupling capacitor for that node in the ASIC chain. Unfortunately if it has de-soldered this is probably because it has overheated, so it may be damaged as may be the ASIC's on that stage? One of the problems with a String design is that many faults can cause a one down all down situation.

Rich

[blindminer]

It is a decoupling capacitor for that node in the ASIC chain. Unfortunately if it has de-soldered this is probably because it has overheated, so it may be damaged as may be the ASIC's on that stage? One of the problems with a String design is that many faults can cause a one down all down situation.

Rich

Thanks.
This is not cause of overheating. this was happen because of bad shipment.

[RichBC]

It is a decoupling capacitor for that node in the ASIC chain. Unfortunately if it has de-soldered this is probably because it has overheated, so it may be damaged as may be the ASIC's on that stage? One of the problems with a String design is that many faults can cause a one down all down situation.

Rich

Thanks.
This is not cause of overheating. this was happen because of bad shipment.

OK well that is good news, as you can resolder and it should be ok. You will need a fairly watty iron because of the heatsing effect of the copper on the circuit board.


Rich

[blindminer]

It is a decoupling capacitor for that node in the ASIC chain. Unfortunately if it has de-soldered this is probably because it has overheated, so it may be damaged as may be the ASIC's on that stage? One of the problems with a String design is that many faults can cause a one down all down situation.

Rich

Thanks.
This is not cause of overheating. this was happen because of bad shipment.

OK well that is good news, as you can resolder and it should be ok. You will need a fairly watty iron because of the heatsing effect of the copper on the circuit board.


Rich

Thanks for help.

[Mikestang]

When I try to ssh into my S5 and it asks for the password I input it, but it says access denied.  I know the password is correct, I log into the gui just fine with it.  Any idea why I can't ssh in successfully?

[zOU]

The credentials are root/admin in ssh, you may want to try these as they're the default.

They differ from the UI.

Good luck

[Mikestang]

The credentials are root/admin in ssh, you may want to try these as they're the default.

That got it, thanks!  Is it the same on the S1/S3?  I can't remember from when I ssh to them last.



I'll be curious to see if/how this affects performance.  After the reboot the api is reporting 100GH/s less than before, but I know bitmain's fork was suspect as to the numbers it would report...  I'll let it run for a while and see where it stabilizes.

**Edit - hash crept its way back up and stabilized at 1.29TH, just like with 4.8.0, but the error rate is lower than with the older bitmain fork, so hurray for improvements!

[AJRGale]

i wondered, if i got a S5, laid the 2 boards down (open them up like a book) with a 200mm fan over the top of the sinks, would it run cooler? does the other side need some air movement to be happy? other then the LM75As are there..

or is that a good question?

im going to hunt out some PWM 200mm fans and test this theory of mine...

[aarons6]

The credentials are root/admin in ssh, you may want to try these as they're the default.

That got it, thanks!  Is it the same on the S1/S3?  I can't remember from when I ssh to them last.



I'll be curious to see if/how this affects performance.  After the reboot the api is reporting 100GH/s less than before, but I know bitmain's fork was suspect as to the numbers it would report...  I'll let it run for a while and see where it stabilizes.

**Edit - hash crept its way back up and stabilized at 1.29TH, just like with 4.8.0, but the error rate is lower than with the older bitmain fork, so hurray for improvements!

the s5 is read only file system. did you make a new july rom with 4.9.0 in it?

i know NH has one but its the 4/15 firmware not the 7/15

[Mikestang]

the s5 is read only file system. did you make a new july rom with 4.9.0 in it?

i know NH has one but its the 4/15 firmware not the 7/15

No, I would not know how to do that.

I do not want to use the NH fork, I like it straight from the source.  I don't mind having to install it after reboots, I won't be rebooting it very often.

[zOU]

I have received my 2nd S5 earlier this week.

it is located in the same room (my attic) as my 1st one. (and just beside it)

However I noticed and 6C/10F temperature difference, and they're both "stock" (no additionnal fan, no fan limit)