I am willing to bet they will let it sit at the $414 for at least a week to see if the price rebounds at all.

Okay pull up huh , If its a PNP or NPN transistor what is the polarity of the voltage on the Collector when Each type is pulled up think about it.


If the collector was open On each type what would the polarity be.

Learn how the current flows through a bipolar transistor then you will know what I mean.




 

Will Bitmain fix an issue with fans slowing down when S5 loses an Internet access?

I really do think it is hit and miss on what one's do it.  It is not all, but obviously enough to cause a lot of talk.

Instead of waiting for fix I would get molex to fan connector and just not worry about it, if you have an effected unit.

 If that transistor shorted out collector-to-emitter, the voltage on the output would be essencially zero.
 Also, ONE CIRCUIT does not prove anything - both a PNP and a NPN transistor can be used to pull an open-collector type output to ground, you just have to set up the INPUT to the transistor correctly to do so.

 I'm not "the idiot who said open collector", that's from the SPECIFICATION that you obviously still haven't bothered to read.



 BTW, where is the 555 timer in the circuit you posted? It seems to have gone missing....

Bitmain... ಠ_ಠ

Come on guys... At least pretend to care at little bit better.





Edit: I mean, I suppose one is getting a "deal" with Bitmain erroneously valuing coin so highly, but where is the consistency ? Idonteven...

Trust me they are not going to bring it down.

Chain#   ASIC#   Frequency   Temp   ASIC status
1
30
350
115
xxxxxxxx xxxxxxxx xxxxxxxx xxxxxx
2
28
350
127
oxxooxxx xxxxxxxx xxxxxxxx xxxx

     
just  another .  I tried to reset it, attach another fan and nothing helps.

I recommend not to buy the whole series S5..

...  linoleum almost caught fire... This happened two months ago



Noctua
IndustrialPPC NF-F12  and Super Flower
Leadex Gold SF-1300F14MG

Abbot miracle. after a few weeks of testing to wake S5 ,!right now! awakened.(not first time happened) repeatedly reboot worked.
is not the first time that this series S5 collapse and then again from the fluke is started again. but as long as the internet again collapses or pool..  soo i recomended try repetat reboot or swich power on off.. 

But the problems are only from the new series S5 as shown in figure. there's probably something more problems but the longer I do not understand.
 older series are ok
I use second-hand. so I have no problem with warranty..

The actual connectors (per MOLEX datasheets) commonly used on PCi-E power connections are specified for 8 amps per contact (the contacts themselve are seperately rated for 11 amps but that is an OPEN AIR rating, you have to derate for using them in a multi-contact connector due to heat retention). This works out to the +12 connectors on either a 6-pin OR an 8-pin PCi-E connector maxxing out at 288 watts (which is where that maximum "Max PSU Power Unit" figure per connector/loop on the SP20 comes FROM).

 You're have to be overclocking a S5 to exceed that rating on one connector - but it's STILL a bad idea, as the boards aren't designed to be run from a single connector and you're likely to be overstressing some of the +12V traces ON the boards a lot by misconnecting the power leads.

 This is the reason Titans have so MANY power connector issues - they DID exceed the rating of the connector even at their STOCK clock, pulling over 300 watts per connector (the extra 2 pins on a PCi-E 8-pin connector are both GROUND leads, IMO a rather dumb thing for the PCi-E spec to have done - sure, the ground leads run cooler, but that doesn't appreciably help the +12 leads).


 Keeping the bottom of an S5 on a flat surface helps cooling overall a LOT - raising it up lets a LOT of the airflow escape without cooling anything. It's even a good idea to try to close off the open parts of the top to help cooling some, but that's less importans as the controller board blocks quite a bit of the top airflow excape route.