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

[aarons6]

Little tip be care full using the west/nice hash  bot if you lose any coins in it for any reason it's gone you get treated like your stealing from them. i ended telling them to keep the 3 bucks i lost , i copy & pasted in a price it set it at 9.99999 and then took the btc and finished the job. all i got told was if i can reproduce the bug they will give me 0.1 btc then said ty for using westhash so i sent a email the rest i won't get into ,  it ended up me telling them to keep the btc but if it had been 1 BTC i lost that way, id would be a real ass about it .

Are you saying you were able to set price paid on accident?   I'm not understanding what you did that caused it.

I don't know what i did i copied in a price i wanted to set the max at  then it set it to 99.99999 and i saw it late and  then it did below .


Price BTC/TH/Day       Total BTC      Unspent BTC   Completed      Limited TH/s
99.9999                 0.02214800   0.00000000        100.00%        No



My bad meant 99.9999

That's form my past orders on there site they even told me that's not poss . I'm very honest so when i saw me asking for it back was useless i told them keep it . I didn't want to deal with it any more . I'll just be more careful, i know how they roll now . all im sayings is becareful they won't give it back just a tip not making a big deal out of it. 

so you caused that spike?

[1714631327]

1714631327

[1714631327]

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[jtoomim]

Does anyone here know what the component labeled "G337 V2" on the Antminer S5 hashboards is? It's a 2-pin package, looks to be built for high current, and is silkscreen labeled C2, C3, etc. There's one in between each pair of ASICs -- i.e., one for each stage in the string, shared by both strings. My best guess is that they are shunt voltage regulators intended to serve as a bypass in case the voltage gets too high (dead ASIC?), but I don't really know. Ideally, if someone at Bitmain could chime in with a link to a datasheet or a part number, that would be ideal. We're investigating an issue on behalf of another miner in which some of them appear to have burned out.

[MyRig]

Please wait for the details.

Does anyone here know what the component labeled "G337 V2" on the Antminer S5 hashboards is? It's a 2-pin package, looks to be built for high current, and is silkscreen labeled C2, C3, etc. There's one in between each pair of ASICs -- i.e., one for each stage in the string, shared by both strings. My best guess is that they are shunt voltage regulators intended to serve as a bypass in case the voltage gets too high (dead ASIC?), but I don't really know. Ideally, if someone at Bitmain could chime in with a link to a datasheet or a part number, that would be ideal. We're investigating an issue on behalf of another miner in which some of them appear to have burned out.

[J4bberwock]

Does anyone here know what the component labeled "G337 V2" on the Antminer S5 hashboards is? It's a 2-pin package, looks to be built for high current, and is silkscreen labeled C2, C3, etc. There's one in between each pair of ASICs -- i.e., one for each stage in the string, shared by both strings. My best guess is that they are shunt voltage regulators intended to serve as a bypass in case the voltage gets too high (dead ASIC?), but I don't really know. Ideally, if someone at Bitmain could chime in with a link to a datasheet or a part number, that would be ideal. We're investigating an issue on behalf of another miner in which some of them appear to have burned out.

F950G337MAAAQ2 capacitor?
Or a similar one, will need to check the exact size, but for specs, it's 4V 330µF

[marvykkio]

are two days that restart my s5, bought from 1 week, and this morning the result is what you see in the picture. What should I do now with bitmainwarranty?



this morning I packed all the miner, and reversed the blades, and I reassembled everything and went back to work, the problem is gone, now it works again, but the problem that remains is that part of the blade is not working so if you were to burn well this the miner does not work anymore. What do you think I should do? bitamain should send a new blade, but I think this is impossible, that I definitely want to send him the blade, or all of the miner to review it, and spends much time in addition to spending more money to send the miner from italy up in china. what should i do?

[toptekk]

Little tip be care full using the west/nice hash  bot if you lose any coins in it for any reason it's gone you get treated like your stealing from them. i ended telling them to keep the 3 bucks i lost , i copy & pasted in a price it set it at 9.99999 and then took the btc and finished the job. all i got told was if i can reproduce the bug they will give me 0.1 btc then said ty for using westhash so i sent a email the rest i won't get into ,  it ended up me telling them to keep the btc but if it had been 1 BTC i lost that way, id would be a real ass about it .

Are you saying you were able to set price paid on accident?   I'm not understanding what you did that caused it.

I don't know what i did i copied in a price i wanted to set the max at  then it set it to 99.99999 and i saw it late and  then it did below .


Price BTC/TH/Day       Total BTC      Unspent BTC   Completed      Limited TH/s
99.9999                 0.02214800   0.00000000        100.00%        No



My bad meant 99.9999

That's form my past orders on there site they even told me that's not poss . I'm very honest so when i saw me asking for it back was useless i told them keep it . I didn't want to deal with it any more . I'll just be more careful, i know how they roll now . all im sayings is becareful they won't give it back just a tip not making a big deal out of it. 

so you caused that spike?

LOL me ? if that was a week ago maybe but i did not mean to. what i  just posted happen a week ago .

[marvykkio]

bitmain must change my free miner, I also noticed that the fan cover has a bit of rust, and in my opinion was a miner used

[jtoomim]

are two days that restart my s5, bought from 1 week, and this morning the result is what you see in the picture. What should I do now with bitmainwarranty?

That looks to be the same symptoms we have with the miners we are investigating. I suggest taking of the plastic sides and looking at the hashboards for damage to the G337 V2 capacitors. Look for cracked packages or signs of smoke exhaust. Your issue is probably different, but this is easy enough to check for.

J4bberwock, thanks for the lead. These do indeed appear to be capacitors with a 2V withstand voltage. I'm surprised that capacitors were damaged like this. I thought the component would be something that generates heat itself. Curious.

[notlist3d]

are two days that restart my s5, bought from 1 week, and this morning the result is what you see in the picture. What should I do now with bitmainwarranty?

Bitmain warrenty has a nice website for support.  Also they have phone numbers depending on where you are.   

I would get in a support ticket/call and see what they think.  I would guess they will want to try uploading a firmware to make sure it's not software.  If it happens again and cables are good I would guess they will look at blade next.

They were very good when I needed to use them.

[Biodom]

A random observation:
1. It seems that upon loss of internet connection, S5 sometimes latches on a funky state: fan is not spinning or spinning minimally, but temperature is rising.
2. We had intermittant comcast problems in the last few days, so i observed it on a few occasions.
3. I felt that air coming out was very hot, and upon restarting the miner by PSU, miner reported 0 hashing, but temperatures of above 80 degrees at the sensor, so i had to switch it off for 10-20 min, then it worked as it should.

I believe that someone described something similar before.
The solution should be in software, which should maintain fan speed at a certain (closer to high) speed until internet connection is reestablished.

The fact is that the S5 miner does not fully switch itself off on internet drop or, at least, does not maintain fan speed long enough to coool the machine after internet dropoff.

[MyRig]

The Capacitor you were asking is 2V and 330uf.

@notlist3d, thank you for mentioning, yes, if you are in trouble, please call +1-844-248-6246 or support@bitmain.zendesk.com .  In the future we will try to bridge Skype Audio call to this telephone number as well.  Soon Ukraine telephone number for Russian Language be LIVE and EU area phone number to be Live again.

[soy]

are two days that restart my s5, bought from 1 week, and this morning the result is what you see in the picture. What should I do now with bitmainwarranty?

That looks to be the same symptoms we have with the miners we are investigating. I suggest taking of the plastic sides and looking at the hashboards for damage to the G337 V2 capacitors. Look for cracked packages or signs of smoke exhaust. Your issue is probably different, but this is easy enough to check for.

J4bberwock, thanks for the lead. These do indeed appear to be capacitors with a 2V withstand voltage. I'm surprised that capacitors were damaged like this. I thought the component would be something that generates heat itself. Curious.

May I ask what voltage the fried caps are suppose to see?  And these are in series across the voltage supplied to each ASIC?  So, the 12vdc from the power supply is divided equally across the ASICs?  This is what I took away from the series ASICs description.

Are those who are seeing the blown caps using the power supply adapter having a resistor or just using the paperclip jumper?  I ask because KnC had a similar problem of blown caps and I theorized the motherboard actually on the plug allowed a different rise time on the voltages, e.g. without the mb and a paperclip instead, a ramp for the max current didn't ramp instead jumped to full with the result of a turn-on voltage spike - sometimes.

[opentoe]

A random observation:
1. It seems that upon loss of internet connection, S5 sometimes latches on a funky state: fan is not spinning or spinning minimally, but temperature is rising.
2. We had intermittant comcast problems in the last few days, so i observed it on a few occasions.
3. I felt that air coming out was very hot, and upon restarting the miner by PSU, miner reported 0 hashing, but temperatures of above 80 degrees at the sensor, so i had to switch it off for 10-20 min, then it worked as it should.

I believe that someone described something similar before.
The solution should be in software, which should maintain fan speed at a certain (closer to high) speed until internet connection is reestablished.

The fact is that the S5 miner does not fully switch itself off on internet drop or, at least, does not maintain fan speed long enough to coool the machine after internet dropoff.

I mentioned this exact same thing happened to me before. Maybe 3 weeks ago or so in this thread. Even a couple others mentioned the same thing and had screen shots showing over 80 degrees, which shouldn't even happen if the shutdown is 80. All my rigs stopped because of a sporadic internet connection. Miners fans stopped and they all turned into little heaters, getting hotter and hotter. All I needed to do was put my hand or face near one of them and felt the heat spewing off. Thank god I was home to power them off or all my rigs would have over heated. I mentioned and tried to bring this up but nothing came about because I had no "proof" it seems. This happened to me twice on all 6 of my S5's and both times I was lucky enough to be home and power off.

[opentoe]

are two days that restart my s5, bought from 1 week, and this morning the result is what you see in the picture. What should I do now with bitmainwarranty?

That looks to be the same symptoms we have with the miners we are investigating. I suggest taking of the plastic sides and looking at the hashboards for damage to the G337 V2 capacitors. Look for cracked packages or signs of smoke exhaust. Your issue is probably different, but this is easy enough to check for.

J4bberwock, thanks for the lead. These do indeed appear to be capacitors with a 2V withstand voltage. I'm surprised that capacitors were damaged like this. I thought the component would be something that generates heat itself. Curious.

May I ask what voltage the fried caps are suppose to see?  And these are in series across the voltage supplied to each ASIC?  So, the 12vdc from the power supply is divided equally across the ASICs?  This is what I took away from the series ASICs description.

Are those who are seeing the blown caps using the power supply adapter having a resistor or just using the paperclip jumper?  I ask because KnC had a similar problem of blown caps and I theorized the motherboard actually on the plug allowed a different rise time on the voltages, e.g. without the mb and a paperclip instead, a ramp for the max current didn't ramp instead jumped to full with the result of a turn-on voltage spike - sometimes.

I would bet most here just have a paper clip or EVGA has it's little "tester" which is basically the same thing as the paperclip. No resistance at all.

[Biodom]

A random observation:
1. It seems that upon loss of internet connection, S5 sometimes latches on a funky state: fan is not spinning or spinning minimally, but temperature is rising.
2. We had intermittant comcast problems in the last few days, so i observed it on a few occasions.
3. I felt that air coming out was very hot, and upon restarting the miner by PSU, miner reported 0 hashing, but temperatures of above 80 degrees at the sensor, so i had to switch it off for 10-20 min, then it worked as it should.

I believe that someone described something similar before.
The solution should be in software, which should maintain fan speed at a certain (closer to high) speed until internet connection is reestablished.

The fact is that the S5 miner does not fully switch itself off on internet drop or, at least, does not maintain fan speed long enough to coool the machine after internet dropoff.

I mentioned this exact same thing happened to me before. Maybe 3 weeks ago or so in this thread. Even a couple others mentioned the same thing and had screen shots showing over 80 degrees, which shouldn't even happen if the shutdown is 80. All my rigs stopped because of a sporadic internet connection. Miners fans stopped and they all turned into little heaters, getting hotter and hotter. All I needed to do was put my hand or face near one of them and felt the heat spewing off. Thank god I was home to power them off or all my rigs would have over heated. I mentioned and tried to bring this up but nothing came about because I had no "proof" it seems. This happened to me twice on all 6 of my S5's and both times I was lucky enough to be home and power off.

I concur. This may be an intermittent situation, but it is not what supposed to happen.
The solution is quite simple: put a string of code that tells S5 to continue to rotate fan at the same/high speed for 2-3 min after internet disconnect AND do not attempt any mining.
i hate to make a direct comparison, but it is exactly what cough-oolies-cough miner does.

[jtoomim]

May I ask what voltage the fried caps are suppose to see?  And these are in series across the voltage supplied to each ASIC?  So, the 12vdc from the power supply is divided equally across the ASICs?  This is what I took away from the series ASICs description.

Are those who are seeing the blown caps using the power supply adapter having a resistor or just using the paperclip jumper?  I ask because KnC had a similar problem of blown caps and I theorized the motherboard actually on the plug allowed a different rise time on the voltages, e.g. without the mb and a paperclip instead, a ramp for the max current didn't ramp instead jumped to full with the result of a turn-on voltage spike - sometimes.

Yes, the voltage across those caps should be around 0.8 to 0.9 volts.

Actually, Biodom's and opentoe's observations may be related. The datacenter in which these machines were operating was having networking trouble and high temperatures while these S5s were there.

[aarons6]

A random observation:
1. It seems that upon loss of internet connection, S5 sometimes latches on a funky state: fan is not spinning or spinning minimally, but temperature is rising.
2. We had intermittant comcast problems in the last few days, so i observed it on a few occasions.
3. I felt that air coming out was very hot, and upon restarting the miner by PSU, miner reported 0 hashing, but temperatures of above 80 degrees at the sensor, so i had to switch it off for 10-20 min, then it worked as it should.

I believe that someone described something similar before.
The solution should be in software, which should maintain fan speed at a certain (closer to high) speed until internet connection is reestablished.

The fact is that the S5 miner does not fully switch itself off on internet drop or, at least, does not maintain fan speed long enough to coool the machine after internet dropoff.

yes these do have a problem.. just tested it..
i unplugged the internet.. not the cat5 but actually unplugged the internet cable.. so the router was still ON..
it took almost 3 minutes before the s5 realized the internet was down, it started beeping and the fans shut off..

after a minute my miner was at 65c.. i shut it off because i dont want anything to blow up.

my normal temp on the s5 is 46-48 so 65 is way above normal.

its been stated before, even had a screen shot.. but i guess its not high on the to do list to fix.

[thedreamer]

Might have to resort to hooking up the fan(s) directly to the power supply for safety. This way if the lan goes down the fan(s) will still be running, no overheat problem. With the S5's open design, easy as pie. Those Delta 253CFM fans are pretty much always on max anyways. lol

[dog1965]

Might have to resort to hooking up the fan(s) directly to the power supply for safety. This way if the lan goes down the fan(s) will still be running, no overheat problem. With the S5's open design, easy as pie. Those Delta 253CFM fans are pretty much always on max anyways. lol

It sounds like a firmware glitch to me. I think what happens is once the S5 detects no Connection it just shuts the fans down but the miner is still hashing even though it says its not in the miner status page. IT sounds like The only logical answer. Things don't heat up like that not unless there are still running. And with no fan.

I am a disabled engineer I am going to try to pull out all my lab bench equipment to verify this theory. I have to climb into my attic its hard for me.

[HolgerDansk]

Even a couple others mentioned the same thing and had screen shots showing over 80 degrees, which shouldn't even happen if the shutdown is 80.

I'm one of the others that this happened to.  Two of my miners lost internet and the temps rose to over 100C.  The same symptom: very slow fan and lots of heat.

I completely agree it should be a software fix.  It is too bad that it hasn't been a priority.  I'm glad some others have not had this problem (as mentioned when I posted about my problem).  But at least some of are having this problem.  I was able to consistently duplicate it.

Sorry this happened to someone else.  Thank you for bringing it up, so hopefully   Bitmain will fix it.