I have a quick and dirty fix to the PSU problem.
Some of these units draw air from inside the case and there is a blade stacked up right against it.
In these cases unscrew your PSU, flip it, and then make a cutout of the case to accomodate the fan side. Or just leave the lid open a bit.
Topic: ANTMINER S2 Discussion and Support Thread - page 143. (Read 355730 times)
The 120mm PSU fan isnt designed to take warm air....
In fact the air coming out of the case (and therefore inside the case) isn't that warm. It's a lot of air flow given the power usage. Drawing the PSU from outside would probably be better but I doubt it makes that much difference.
for those having power supply problems - I am interested what your room temp is at. if i understand correctly higher temps = lower efficiency so you cannot expect the power supply to perform the same at 60 degrees F (15.5 Celsius) vs 80 degrees F (26.5 Celsius). this also would make a difference as to where it is pulling air from (inside the case B2's vs outside the case B2's). i for one replaced mine about 2 hrs after receiving it due to the fact that i wanted to overclock it (if possible). but i did not have any problems with my unit using the stock PS with the room temp at 60 degrees F or below.
short term a cool room the psu will work. long term it is under sized.
be smart pull a blade all worries vanish. this may be the best solution for almost all owners of the gear.
another fairly cheap solution is to replace the power supply with something beefier. my personal recommendation (and what I did for myself) is to spend around $150 and purchase 2x of these 750w kits - http://www.gekkoscience.com/products/server_supply_breakout_board.html - and run them with power sharing pins and you have more than enough for the S2 (unless we figure how to overclock past 250mhz) and enough for 3 overclocked S1's. and if you have one of these power supplies go bad you can replace it for a cheap $25 from ebay. i keep an extra few on hand for myself anyway for rapid deployment for myself and customers. if you want more info on the maker of these you can read this thread - https://bitcointalksearch.org/topic/server-power-supply-interface-board-for-standalone-miners-and-gpu-rigs-379677
DISCLAIMER: I am in no way affiliated or compensated by sidehack for this recommendation. he has a decent product and i feel he should make money for his work and research.
EDIT: here's pictures of my setup
[img ]https://dl.dropboxusercontent.com/u/23772269/2x%20power%20supplies%20in%20tandem.jpg[/img]
[img ]https://dl.dropboxusercontent.com/u/23772269/top%20view%20case%20off.jpg[/img]
[img ]https://dl.dropboxusercontent.com/u/23772269/top%20view%20with%20case%20on.jpg[/img]
Thats to tell you how cheap these products are....
Cheap PSU (yike), cheap board design and cheap casing. Yet not very competitive price.
If you satisfy money for quality, why not get the Coincraft clones?
Seeing your pics, i'm wondering how the heck someone can even call this a 4u rackmountable miner. Btw... ppl should stop putting consumer desktop PSU in a rackmountable server case. The 120mm PSU fan isnt designed to take warm air....
for those having power supply problems - I am interested what your room temp is at. if i understand correctly higher temps = lower efficiency so you cannot expect the power supply to perform the same at 60 degrees F (15.5 Celsius) vs 80 degrees F (26.5 Celsius). this also would make a difference as to where it is pulling air from (inside the case B2's vs outside the case B2's). i for one replaced mine about 2 hrs after receiving it due to the fact that i wanted to overclock it (if possible). but i did not have any problems with my unit using the stock PS with the room temp at 60 degrees F or below.
short term a cool room the psu will work. long term it is under sized.
be smart pull a blade all worries vanish. this may be the best solution for almost all owners of the gear.
another fairly cheap solution is to replace the power supply with something beefier. my personal recommendation (and what I did for myself) is to spend around $150 and purchase 2x of these 750w kits - http://www.gekkoscience.com/products/server_supply_breakout_board.html - and run them with power sharing pins and you have more than enough for the S2 (unless we figure how to overclock past 250mhz) and enough for 3 overclocked S1's. and if you have one of these power supplies go bad you can replace it for a cheap $25 from ebay. i keep an extra few on hand for myself anyway for rapid deployment for myself and customers. if you want more info on the maker of these you can read this thread - https://bitcointalksearch.org/topic/server-power-supply-interface-board-for-standalone-miners-and-gpu-rigs-379677
DISCLAIMER: I am in no way affiliated or compensated by sidehack for this recommendation. he has a decent product and i feel he should make money for his work and research.
EDIT: here's pictures of my setup
for those having power supply problems - I am interested what your room temp is at. if i understand correctly higher temps = lower efficiency so you cannot expect the power supply to perform the same at 60 degrees F (15.5 Celsius) vs 80 degrees F (26.5 Celsius). this also would make a difference as to where it is pulling air from (inside the case B2's vs outside the case B2's). i for one replaced mine about 2 hrs after receiving it due to the fact that i wanted to overclock it (if possible). but i did not have any problems with my unit using the stock PS with the room temp at 60 degrees F or below.
short term a cool room the psu will work. long term it is under sized.
be smart pull a blade all worries vanish. this may be the best solution for almost all owners of the gear.
Not even that bad long term. You have a spare blade in case one fails, or you can sell it to someone else with a failed blade, or who wants to build their own homebrew miner around it.
for those having power supply problems - I am interested what your room temp is at. if i understand correctly higher temps = lower efficiency so you cannot expect the power supply to perform the same at 60 degrees F (15.5 Celsius) vs 80 degrees F (26.5 Celsius). this also would make a difference as to where it is pulling air from (inside the case B2's vs outside the case B2's). i for one replaced mine about 2 hrs after receiving it due to the fact that i wanted to overclock it (if possible). but i did not have any problems with my unit using the stock PS with the room temp at 60 degrees F or below.
short term a cool room the psu will work. long term it is under sized.
be smart pull a blade all worries vanish. this may be the best solution for almost all owners of the gear.
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2014-04-18 17:11:07.625820 > Worker [redacted] submitted share more than once!
2014-04-18 17:11:07.635631 > Worker [redacted] submitted share more than once!
2014-04-18 17:11:07.652352 > Worker [redacted] submitted share more than once!
2014-04-18 17:11:07.663747 > Worker [redacted] submitted share more than once!
2014-04-18 17:11:07.678253 > Worker [redacted] submitted share more than once!
2014-04-18 17:11:07.691856 > Worker [redacted] submitted share more than once!
2014-04-18 17:11:07.706369 > Worker [redacted] submitted share more than once!
2014-04-18 17:11:07.720108 > Worker [redacted] submitted share more than once!
etc.
I get many of these on p2pool with the S2. I don't remember getting them with the S1, but I'm not 100% sure. Ghash.io was also reporting a fairly high number of duplicates with the S2 when I tried it.
for those having power supply problems - I am interested what your room temp is at. if i understand correctly higher temps = lower efficiency so you cannot expect the power supply to perform the same at 60 degrees F (15.5 Celsius) vs 80 degrees F (26.5 Celsius). this also would make a difference as to where it is pulling air from (inside the case B2's vs outside the case B2's). i for one replaced mine about 2 hrs after receiving it due to the fact that i wanted to overclock it (if possible). but i did not have any problems with my unit using the stock PS with the room temp at 60 degrees F or below.
The basic problem is the small psu
In my case, the unit worked fine for half a day then shut down.
Once I moved two S1's to a different outlet and opened the case of the S2 it started working again and has been stable for a while.
Once I moved two S1's to a different outlet and opened the case of the S2 it started working again and has been stable for a while.
Found my culprit with the faulty antminer.
Seems one of my slots doesn't report any temperatures when a module is running in it.
This makes the fans go haywire and probably trip a security thing in the antminer it self or the PSU
so running with 1 blade less works fine?
Yup no problems yet.. though missing out on some gigahashes now :/
On a side note found it not to be the slot it was mining in but one of the cards tripping the PSU protection.
It either looks like one of my miners needs more power then the power supply gives or one of the blades is faulty and tripping the surge protection.
I ordered a 1350W platimax enermax power supply to find out if this resolves it using all 10 blades
I have another antminer S2 which is running fine with the 1000W enermax powersupply but I think these 1000W power supply's are cutting it really close to max usage of the power supply and will probably end up frying it in the end.. not something I am looking forwards to.
On other thoughts I hate to spend another 250 euros to replace the power supply.
You say you have two units, have you tried one at a time by itself?
Found my culprit with the faulty antminer.
Seems one of my slots doesn't report any temperatures when a module is running in it.
This makes the fans go haywire and probably trip a security thing in the antminer it self or the PSU
so running with 1 blade less works fine?
Yup no problems yet.. though missing out on some gigahashes now :/
On a side note found it not to be the slot it was mining in but one of the cards tripping the PSU protection.
It either looks like one of my miners needs more power then the power supply gives or one of the blades is faulty and tripping the surge protection.
I ordered a 1350W platimax enermax power supply to find out if this resolves it using all 10 blades
I have another antminer S2 which is running fine with the 1000W enermax powersupply but I think these 1000W power supply's are cutting it really close to max usage of the power supply and will probably end up frying it in the end.. not something I am looking forwards to.
On other thoughts I hate to spend another 250 euros to replace the power supply.
Best method is to log in through ssh and issue the "halt" command, wait for a few minutes for things to cool down.
This way you give the psu time to cool down and most important the filesystem on the sd card is unmounted.
If you just flip the power switch under full load chances are that you get a power spike on the 12 volt rail and damage the mounted filesystem.
This way you give the psu time to cool down and most important the filesystem on the sd card is unmounted.
If you just flip the power switch under full load chances are that you get a power spike on the 12 volt rail and damage the mounted filesystem.
I looked around their system image pretty carefully and I couldn't find anything that was writing to the SD. Yes, its mounted, but it should still be idle and consistent. It is possible I missed something, but I don't think so.
Reducing the power load to a minimum before physically powering it down might be more important.
Best method is to log in through ssh and issue the "halt" command, wait for a few minutes for things to cool down.
This way you give the psu time to cool down and most important the filesystem on the sd card is unmounted.
If you just flip the power switch under full load chances are that you get a power spike on the 12 volt rail and damage the mounted filesystem.
This way you give the psu time to cool down and most important the filesystem on the sd card is unmounted.
If you just flip the power switch under full load chances are that you get a power spike on the 12 volt rail and damage the mounted filesystem.
Several people seem to be concluding that their power supplies are "dead" or malfunctioning based on them refusing to turn on for several minutes after turning the S2 off. FYI, all three of my batch 1 S2's act this way - when you turn one of them off, you have to wait at least 10 minutes (haven't timed it, but it's more than 5 minutes and less than 20 minutes...) before they will agree to turn back on again. disconnecting power cord, swearing, etc have all proven ineffective.
I don't think this is a malfunction - i think it must be a design "feature" of this particular power supply. Or perhaps it's the way they are powering off... typically, you would not shut off a server by flipping the switch on it's power supply. you'd issue a shutdown command in the OS and have it gracefully shut the system down. I don't think that is possible with the S2 as the ATX motherboard cable is not utilized. it's really unfortunate that the BBB board was not powered by the ATX motherboard cable - that would have gotten rid of the "paperclip" mod and perhaps made it possible to gracefully power on and off with a soft button the front of the case.
But the way it's designed, when you flip the power supply off while the case is open, i see the system power off then, after about .5 sec, it powers on for just a fraction of a second. a little blip.
Perhaps this blip is causing two problems - corrupts the SD card, and trips something in the power supply that stops it from powering back on for several minutes.
I'm very interested in hearing if replacing the power supply solves the corrupt SD card issue. that would be great!
I don't think this is a malfunction - i think it must be a design "feature" of this particular power supply. Or perhaps it's the way they are powering off... typically, you would not shut off a server by flipping the switch on it's power supply. you'd issue a shutdown command in the OS and have it gracefully shut the system down. I don't think that is possible with the S2 as the ATX motherboard cable is not utilized. it's really unfortunate that the BBB board was not powered by the ATX motherboard cable - that would have gotten rid of the "paperclip" mod and perhaps made it possible to gracefully power on and off with a soft button the front of the case.
But the way it's designed, when you flip the power supply off while the case is open, i see the system power off then, after about .5 sec, it powers on for just a fraction of a second. a little blip.
Perhaps this blip is causing two problems - corrupts the SD card, and trips something in the power supply that stops it from powering back on for several minutes.
I'm very interested in hearing if replacing the power supply solves the corrupt SD card issue. that would be great!
You can flip the 110/220 switch back and forth while unplugged to reset internal relay
Unplug ac and short circuit with a coin.
Several people seem to be concluding that their power supplies are "dead" or malfunctioning based on them refusing to turn on for several minutes after turning the S2 off. FYI, all three of my batch 1 S2's act this way - when you turn one of them off, you have to wait at least 10 minutes (haven't timed it, but it's more than 5 minutes and less than 20 minutes...) before they will agree to turn back on again. disconnecting power cord, swearing, etc have all proven ineffective.
I don't think this is a malfunction - i think it must be a design "feature" of this particular power supply. Or perhaps it's the way they are powering off... typically, you would not shut off a server by flipping the switch on it's power supply. you'd issue a shutdown command in the OS and have it gracefully shut the system down. I don't think that is possible with the S2 as the ATX motherboard cable is not utilized. it's really unfortunate that the BBB board was not powered by the ATX motherboard cable - that would have gotten rid of the "paperclip" mod and perhaps made it possible to gracefully power on and off with a soft button the front of the case.
But the way it's designed, when you flip the power supply off while the case is open, i see the system power off then, after about .5 sec, it powers on for just a fraction of a second. a little blip.
Perhaps this blip is causing two problems - corrupts the SD card, and trips something in the power supply that stops it from powering back on for several minutes.
I'm very interested in hearing if replacing the power supply solves the corrupt SD card issue. that would be great!
I don't think this is a malfunction - i think it must be a design "feature" of this particular power supply. Or perhaps it's the way they are powering off... typically, you would not shut off a server by flipping the switch on it's power supply. you'd issue a shutdown command in the OS and have it gracefully shut the system down. I don't think that is possible with the S2 as the ATX motherboard cable is not utilized. it's really unfortunate that the BBB board was not powered by the ATX motherboard cable - that would have gotten rid of the "paperclip" mod and perhaps made it possible to gracefully power on and off with a soft button the front of the case.
But the way it's designed, when you flip the power supply off while the case is open, i see the system power off then, after about .5 sec, it powers on for just a fraction of a second. a little blip.
Perhaps this blip is causing two problems - corrupts the SD card, and trips something in the power supply that stops it from powering back on for several minutes.
I'm very interested in hearing if replacing the power supply solves the corrupt SD card issue. that would be great!
You can flip the 110/220 switch back and forth while unplugged to reset internal relay
I am turning mine off with the powerdown command via CLI. Tested it 4 times and it comes back up with no issues for me. I have a B2 S2.
can you clarify the steps to do that please? i'd like to try it. thx.
If you take the power away from a psu under full load the psu fan will stop instantly.
This way you overheat the psu so you will have to wait for it to cool down.
This way you overheat the psu so you will have to wait for it to cool down.
You can try pulling the ethernet cable first. No network = no mining = very low load.
Several people seem to be concluding that their power supplies are "dead" or malfunctioning based on them refusing to turn on for several minutes after turning the S2 off. FYI, all three of my batch 1 S2's act this way - when you turn one of them off, you have to wait at least 10 minutes (haven't timed it, but it's more than 5 minutes and less than 20 minutes...) before they will agree to turn back on again. disconnecting power cord, swearing, etc have all proven ineffective.
I don't think this is a malfunction - i think it must be a design "feature" of this particular power supply. Or perhaps it's the way they are powering off... typically, you would not shut off a server by flipping the switch on it's power supply. you'd issue a shutdown command in the OS and have it gracefully shut the system down. I don't think that is possible with the S2 as the ATX motherboard cable is not utilized. it's really unfortunate that the BBB board was not powered by the ATX motherboard cable - that would have gotten rid of the "paperclip" mod and perhaps made it possible to gracefully power on and off with a soft button the front of the case.
But the way it's designed, when you flip the power supply off while the case is open, i see the system power off then, after about .5 sec, it powers on for just a fraction of a second. a little blip.
Perhaps this blip is causing two problems - corrupts the SD card, and trips something in the power supply that stops it from powering back on for several minutes.
I'm very interested in hearing if replacing the power supply solves the corrupt SD card issue. that would be great!
I don't think this is a malfunction - i think it must be a design "feature" of this particular power supply. Or perhaps it's the way they are powering off... typically, you would not shut off a server by flipping the switch on it's power supply. you'd issue a shutdown command in the OS and have it gracefully shut the system down. I don't think that is possible with the S2 as the ATX motherboard cable is not utilized. it's really unfortunate that the BBB board was not powered by the ATX motherboard cable - that would have gotten rid of the "paperclip" mod and perhaps made it possible to gracefully power on and off with a soft button the front of the case.
But the way it's designed, when you flip the power supply off while the case is open, i see the system power off then, after about .5 sec, it powers on for just a fraction of a second. a little blip.
Perhaps this blip is causing two problems - corrupts the SD card, and trips something in the power supply that stops it from powering back on for several minutes.
I'm very interested in hearing if replacing the power supply solves the corrupt SD card issue. that would be great!
The issue you are experiencing is that the PDUs internal relay in short circuited to be on due to the PSU pins being tied together with a paperclip.
If you remove the paperclip, you'll hear the relay in the power supply reset and once you put the paperclip back in, it will start right up.
I am turning mine off with the powerdown command via CLI. Tested it 4 times and it comes back up with no issues for me. I have a B2 S2.
can you clarify the steps to do that please? i'd like to try it. thx.
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