Author

Topic: Swedish ASIC miner company kncminer.com - page 1387. (Read 3050075 times)

soy
legendary
Activity: 1428
Merit: 1013
October 11, 2013, 01:03:03 PM
And here is a tip for everyone.  You know those two pins you jump to make the PSU work?  Do you know what those are used for?  

When you press the OFF switch your motherboard opens those two pins, telling the PSU to power everything down safely.  That is the only correct way to shut a system down - pull the jumper, then power off the PSU.  

If you just flip the PSU switch off, you leave a "whole lot of amerage" suddenly looking for the quickest way to get home.  And electrons aren't fussy, if they can find a shorter path across a component instead of thru it, they'll use that.  If there are unseen micro droplets of solder on the solder mask that present a shorter path, they'll use that path, carbonizing the solder mask and making it an even BETTER shortcut - resulting in nasty smelling smoke and burned solder mask...

Just flipping the PSU switch to off might not break anything the first time or even 100th time you do it, but eventually you'll pay the price, and the magic smoke gets out.  There's a very valid reason why you don't just turn off your computer by yanking the plug out of the wall socket - and flipping the PSU switch is the equivalent of doing that.  Do that to your desktop computer a few times and see how well it runs as a result...

+1

I, for one, would like to see that shown experimentally.  I personally believe there is no fault in pulling the plug.

More accurately, I believe there is no fault in pulling the plug with the miner attached to the power supply.

Still, that doesn't have a bearing on potential buildup on the power supply lines after disconnecting from the miner, plugged in with switch off or unplugged from the wall with power supply switch on.  The possible problem would be the power supply outputs looking at a open given that the leads would be unplugged from the miner.  The longer unplugged the higher the potential potential buildup. KnC does not know the design of every model of every power supply manufactured.  If a power supply had been powered on for hours or days the potential for voltage potential buildup on the filter capacitors while leads are disconnected may very well exist in some miners.
 In any case, I have two 12 volt fans here I bought to mount on a Blade but difficulty made me decide that it can't pay itself off in a reasonable period.  So, those two fans are going on to exhaust the Mercury, which should have no problem with heat unless I buy modules to upgrade to Saturn then Jupiter, if possible and cost effective.  These fans will always be plugged in first and then the miner, draining off any potential before firing up the supply - and the supply will have been shut down via an external power strip switch and back on the same way.

soy

sr. member
Activity: 266
Merit: 250
October 11, 2013, 01:01:37 PM
Hint: Jupiter owners should raise their diff to over 400... it will run faster
there is a "sweetspot....   find it.

I can confirm this. For a Saturn 128 was not enough, 256 gave better performance.
I did not try other values, did not even know that other values than 2^x would be OK.

trepex
hero member
Activity: 518
Merit: 500
Every man is guilty of all the good he did not do.
October 11, 2013, 12:56:25 PM
Hint: Jupiter owners should raise their diff to over 400... it will run faster
there is a "sweetspot....   find it.

Good post explaining this a little.
https://bitcointalksearch.org/topic/suggestion-for-how-to-choose-a-pool-difficulty-for-miners-274023
newbie
Activity: 56
Merit: 0
October 11, 2013, 12:56:05 PM

http://thumbs4.ebaystatic.com/d/l225/m/mgjVeAWKwqzEQE7SmKpr4Jg.jpg
I bought this (sry for bad pic)
I didnt take much notice at the time, but the jumper is set to pin 4 and pin 6 unlike the setup suggested in the manual of pin 4 and 5
I also have the 8vrm boards and the 6 connection controller board

http://thumbs4.ebaystatic.com/d/l225/m/mgjVeAWKwqzEQE7SmKpr4Jg.jpg

I bought that too. Is there something wrong with the configuration? Should i change the pins? Do you have problems with yours?
legendary
Activity: 938
Merit: 1000
LIR DEV
October 11, 2013, 12:55:03 PM
also...  runnning the right diff is important, slush's pool has (varidiff), which auto-tunes to your asics.
runing your machine on slush's pool for a few hrs will give you a good idea where to set it.
my saturn has been running @ 260-300+ solid now on slush for the past 18 hours since update to 0.94.... of course it does dip down during flushwork...  for a few seconds.
soy
legendary
Activity: 1428
Merit: 1013
October 11, 2013, 12:52:25 PM
The trick is for what, just testing?  No matter what else that wire pair does, it tells the power supply that a motherboard is connected.  There is no motherboard connected to the motherboard connector when that wire pair is jumped.

There is no need for a motherboard to be connected.   The power supply turns on the when voltage on that pin is low and it turns off when the voltage on that pin is high.  A motherboard, switch, or paperclip all do the same thing they connect the power-on pin to ground which pulls the voltage low.  When the power supply is on (plugged in and any hardwired power switch is turned on) it monitors that pin and supplies continual power to the 5VSB rail.  When it goes low it "turns on" = supplies power to the other rails, and when it goes high it "turns off" = disconnects power to the other rails.



Well, if the exploding caps are caused by voltage buildup on disconnected leads after the miner is disconnected, even with the power supply off, the voltage buildup due to voltage memory of the capacitors, voltage buildup that the power supply designers decided would be drained by the motherboard, then the jumper is signaling a condition, motherboard connected, that does not exist.
newbie
Activity: 56
Merit: 0
October 11, 2013, 12:48:44 PM
W. T. F.?

This is running 0.93...umm help!?

turn off the power, open the case, reconnect the cables
legendary
Activity: 938
Merit: 1000
LIR DEV
October 11, 2013, 12:39:19 PM
Hint: Jupiter owners should raise their diff to over 400... it will run faster
there is a "sweetspot....   find it.
hero member
Activity: 778
Merit: 563
October 11, 2013, 12:36:53 PM
my home unit dropped from 540ish to 400 yesterday afternoon.  I did try rebooting yesterday also taking case off and adding fan but that didn't change anything.  This morning I did a hard reset (hold reset for 5 seconds) and the miner is back above 530 since.

full member
Activity: 164
Merit: 100
October 11, 2013, 12:34:04 PM
Question, is there any orders that are being shipped. That have not had there status switched to in progress? Or how about hosting units?
my uncle have 3units on ups's hand atm
newbie
Activity: 47
Merit: 0
October 11, 2013, 12:32:28 PM
Question, is there any orders that are being shipped. That have not had there status switched to in progress? Or how about hosting units?
newbie
Activity: 56
Merit: 0
October 11, 2013, 12:25:31 PM
^Yeah, 550+ yeah, my ass... I am hosted and stuck at 100 average....

can't you ask the people at the hosting facility to turn off its power, open the case and check if there are loose cables? You are paying them afterall. That is likely the issue with your miner.
full member
Activity: 164
Merit: 100
October 11, 2013, 12:23:31 PM
Probably a stupid question:
Is anyone's Jupiter actually working reliably at 450+GH/s?
all of mine are working 450+ with 0.93
member
Activity: 95
Merit: 10
October 11, 2013, 12:23:22 PM
Mine has changed to in progress as well, though I'm starting to think they just switched most orders to in progress to try and avoid refunds, hope in wrong though, we will see

I suspect they are behind schedule on their hosted scheme so this is likely where all their focus is. Any word anywhere from bitcoinorama? It would be very nice to get an update from him.
hero member
Activity: 744
Merit: 514
gotta let a coin be a coin
October 11, 2013, 12:22:54 PM
Order 29XX, Jupiter
Paid June 28
Changed status from "Paid" to "In progress"

35xx in progress too.  Seems they're moving at a good pace now.
Are either of you hosted or are you both shipping?
hero member
Activity: 574
Merit: 500
October 11, 2013, 12:22:43 PM
Hoping "in progress" isn't a stall technique.
member
Activity: 95
Merit: 10
October 11, 2013, 12:20:16 PM
Probably a stupid question:
Is anyone's Jupiter actually working reliably at 450+GH/s?


Yes mine, stable at 500 Gh/s @ BTCguild. 0.94 firmware.

Mine too stable around 450 but they better f'n sort the firmware, before 0.94 mine was running 100GH/s faster.
I agree they have many , many issues with their firmware. Kind of unprofessional from this company.


Is 0.94 a must for stability or can you apply up to 0.93 for now until they fix the speed issue with 0.94?

J/
newbie
Activity: 47
Merit: 0
October 11, 2013, 12:18:08 PM
Mine has changed to in progress as well 31xx, though I'm starting to think they just switched most orders to in progress to try and avoid refunds, hope in wrong though, we will see
member
Activity: 95
Merit: 10
October 11, 2013, 12:15:59 PM

Can we have a count on how many showing "in progress" for more than 1 week?
hero member
Activity: 784
Merit: 1004
Glow Stick Dance!
October 11, 2013, 12:12:56 PM
Order 29XX, Jupiter
Paid June 28
Changed status from "Paid" to "In progress"

35xx in progress too.  Seems they're moving at a good pace now.
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