Author

Topic: Swedish ASIC miner company kncminer.com - page 1234. (Read 3049528 times)

soy
legendary
Activity: 1428
Merit: 1013
October 23, 2013, 02:15:00 PM
Just back from 7 miles with my dog and found my miners down.  Must have been cable work nearby.  

So, here's what I think.  If an ASIC module has one or more dies showing high cores being disabled, shut down the system, let sit a minute before unplugging cables from the module.  Remove the module's heatsink, remove the board from the unit.  Then with some gentle support under 1 VRM at a time, exert pressure down on the flat metal top.  Continue with each VRM supporting under that module as you do so.  Reassemble the unit.  Run enablecores.bin and if you see improvement it's not that the VRMs are providing improved power but that the VRMs are losing more heat from their top rather than there bottom.  When they lose heat from the bottom the heat travels by way of the PCB to the nearby ASIC module and the nearest die will come up with errors.  That one reason the lower the fans to the deck method works so effectively - it passes air between the VRMs and ASIC module.

You all are welcome.  I know this is helping my competition but then I've never been an overachiever.

hero member
Activity: 812
Merit: 502
October 23, 2013, 02:14:17 PM
I went ahead and let everything run on 0.97
it has been over 5 hrs
the slowest one (255), has slowly worked it's way up to 260.
the middle one(265) has stayed unchanged.
the fast one(275), is now 280.

O'rama...   will do, sry.

So average is 268. Still unhappy?
It's better than what I currently have  Grin
legendary
Activity: 938
Merit: 1000
LIR DEV
October 23, 2013, 02:11:55 PM
I went ahead and let everything run on 0.97
it has been over 5 hrs
the slowest one (255), has slowly worked it's way up to 260.
the middle one(265) has stayed unchanged.
the fast one(275), is now 280.

***So the 0.97 DOES  Perform better****
.... I apologize for my outburst at 4am
Please forgive Ewik

O'rama...   will do, sry.
legendary
Activity: 1066
Merit: 1098
October 23, 2013, 02:11:50 PM
Quote
Maybe you mean you saw a power supply spin it's OWN fan and shut down?  That would be different, and certainly possible - but that is not the scenario the poster described.
Not to belabor the issue but that is the scenario described.


Nope, read again:

Hey,

Thanks for the tip.

Repeat of the same.

On just the PS with the mb cable jumped - I get 1-4 revs of the PS fan, then nothing. It's like something clicks off in the PS as soon as it ramps up.

On the PS with one board attached - I get 1-4 revs of the PS fan, the board fan, and the two case fans, then nothing. Same kind of behaviour, almost like something clicks inside the PS as soon as it begins to ramp up.

Repeat for all boards.

full member
Activity: 210
Merit: 100
October 23, 2013, 02:10:36 PM
Weird.

But thanks for double checking me crumbs / all.



If you have a desktop, you can try its PS with the miner, at least one or two boards...  Good luck.
member
Activity: 111
Merit: 10
October 23, 2013, 02:09:41 PM
Quote
Maybe you mean you saw a power supply spin it's OWN fan and shut down?  That would be different, and certainly possible - but that is not the scenario the poster described.
Not to belabor the issue but that is the scenario described.
jr. member
Activity: 30
Merit: 12
October 23, 2013, 02:08:33 PM
Weird.

But thanks for double checking me crumbs / all.

full member
Activity: 210
Merit: 100
October 23, 2013, 02:05:43 PM
Look on the bright side, it's not your *expensive* stuff hat's broken Cheesy
Edit:  If you have a desktop 'puter, unplug its PS, plug this one into its MB (Just the 24 pin), and hit the "on" button...
Edit2:  If still no dice, check if there's a 120/240 switch near the power cord.  Make sure it's flicked the right way.
full member
Activity: 210
Merit: 100
October 23, 2013, 02:04:29 PM
There's only one green wire, and that's the one the paperclip's on.

Never jumped this power supply before, since I bought it specifically for the jupiter, but I HAVE done this on other power supplies ... so I'm confident I'm jumping it correctly.

It's the other stuff that's puzzling to me.

Like, the fans spin up, then nothing. That seems odd.

Anyway, working on the assumption it's a dead PS - off to the local computer store to get a tester on it / buy a new one.

Weird though, that it would be dead out of the box. Still seems much more likely I've boned something.



It probably is the PS.  Typical behavior if there's a short.  RARELY the PS won't go on without a load, but most modern ones will.  If you have an old HD or CDROM/whatever, plug it into the PS & repeat the steps with the paperclip.
hero member
Activity: 532
Merit: 500
October 23, 2013, 02:04:13 PM
Phoenix1969, any danger of you checking your PMs at any point??
legendary
Activity: 1066
Merit: 1098
October 23, 2013, 02:03:04 PM
my vote is that the paper clip's in the wrong spot.  Wrong cable maybe?  How about a pic?

He said the fans spin up, then go back off.

If the paper clip was in the wrong place, the fans would not spin at all, as the power supply would be off.
I've seen power supplies that behave exactly as he describes when powered up while attached to nothing.

The fans on the miner require power to spin.

If the power supply is off, i.e., the paper clip is in the wrong place, those fans have no power available to spin them.

Maybe you mean you saw a power supply spin it's OWN fan and shut down?  That would be different, and certainly possible - but that is not the scenario the poster described.


He would get that if the PS protection kicks in ^ shuts the PS down.  The fan would spin up & stop.  Waiting a few mins will kick the protection out again.  

Yep - but it would certainly mean he did not have the paperclip in the wrong place.
full member
Activity: 210
Merit: 100
October 23, 2013, 02:01:54 PM
my vote is that the paper clip's in the wrong spot.  Wrong cable maybe?  How about a pic?

He said the fans spin up, then go back off.

If the paper clip was in the wrong place, the fans would not spin at all, as the power supply would be off.
I've seen power supplies that behave exactly as he describes when powered up while attached to nothing.

The fans on the miner require power to spin.

If the power supply is off, i.e., the paper clip is in the wrong place, those fans have no power available to spin them.

Maybe you mean you saw a power supply spin it's OWN fan and shut down?  That would be different, and certainly possible - but that is not the scenario the poster described.


He would get that if the PS protection kicks in ^ shuts the PS down.  The fan would spin up & stop.  Waiting a few mins will kick the protection out again.  
jr. member
Activity: 30
Merit: 12
October 23, 2013, 02:01:26 PM
There's only one green wire, and that's the one the paperclip's on.

Never jumped this power supply before, since I bought it specifically for the jupiter, but I HAVE done this on other power supplies ... so I'm confident I'm jumping it correctly.

It's the other stuff that's puzzling to me.

Like, the fans spin up, then nothing. That seems odd.

Anyway, working on the assumption it's a dead PS - off to the local computer store to get a tester on it / buy a new one.

Weird though, that it would be dead out of the box. Still seems much more likely I've boned something.

full member
Activity: 210
Merit: 100
October 23, 2013, 01:59:37 PM
Hey,

Thanks for the tip.

Repeat of the same.

On just the PS with the mb cable jumped - I get 1-4 revs of the PS fan, then nothing. It's like something clicks off in the PS as soon as it ramps up.

On the PS with one board attached - I get 1-4 revs of the PS fan, the board fan, and the two case fans, then nothing. Same kind of behaviour, almost like something clicks inside the PS as soon as it begins to ramp up.

Repeat for all boards.


It's the PS.

Unplug everything,  If it's a modular PS, unplug all the cables but the MB/24 pin cable.
1.  Turn on the PS and try sticking in the paper clip again between the green and one of the black wires.  As you stick it in, wiggle it -- see if the PS fan goes on.  I'll be refreshing the page Cheesy
sr. member
Activity: 1176
Merit: 265
October 23, 2013, 01:58:42 PM
Hey,

Thanks for the tip.

Repeat of the same.

On just the PS with the mb cable jumped - I get 1-4 revs of the PS fan, then nothing. It's like something clicks off in the PS as soon as it ramps up.

On the PS with one board attached - I get 1-4 revs of the PS fan, the board fan, and the two case fans, then nothing. Same kind of behaviour, almost like something clicks inside the PS as soon as it begins to ramp up.

Repeat for all boards.


Tried it on a PC ?
legendary
Activity: 1066
Merit: 1098
October 23, 2013, 01:58:28 PM
my vote is that the paper clip's in the wrong spot.  Wrong cable maybe?  How about a pic?

He said the fans spin up, then go back off.

If the paper clip was in the wrong place, the fans would not spin at all, as the power supply would be off.
I've seen power supplies that behave exactly as he describes when powered up while attached to nothing.

The fans on the miner require power to spin.

If the power supply is off, i.e., the paper clip is in the wrong place, those fans have no power available to spin them.

Maybe you mean you saw a power supply spin it's OWN fan and shut down?  That would be different, and certainly possible - but that is not the scenario the poster described.
member
Activity: 111
Merit: 10
October 23, 2013, 01:55:03 PM
my vote is that the paper clip's in the wrong spot.  Wrong cable maybe?  How about a pic?

He said the fans spin up, then go back off.

If the paper clip was in the wrong place, the fans would not spin at all, as the power supply would be off.
I've seen power supplies that behave exactly as he describes when powered up while attached to nothing.
legendary
Activity: 1066
Merit: 1098
October 23, 2013, 01:53:55 PM
my vote is that the paper clip's in the wrong spot.  Wrong cable maybe?  How about a pic?

He said the fans spin up, then go back off.

If the paper clip was in the wrong place, the fans would not spin at all, as the power supply would be off.
member
Activity: 111
Merit: 10
October 23, 2013, 01:51:44 PM
my vote is that the paper clip's in the wrong spot.  Wrong cable maybe?  How about a pic?
jr. member
Activity: 30
Merit: 12
October 23, 2013, 01:45:30 PM
Hey,

Thanks for the tip.

Repeat of the same.

On just the PS with the mb cable jumped - I get 1-4 revs of the PS fan, then nothing. It's like something clicks off in the PS as soon as it ramps up.

On the PS with one board attached - I get 1-4 revs of the PS fan, the board fan, and the two case fans, then nothing. Same kind of behaviour, almost like something clicks inside the PS as soon as it begins to ramp up.

Repeat for all boards.
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