Swedish ASIC miner company kncminer.com - page 80.

Searing

copper member

Activity: 2898

Merit: 1465

Clueless!

Quote from: ilati on August 28, 2015, 11:45:40 PM

Here is a Titan controller board if anyone needs one: Grin

http://www.ebay.com/itm/KNC-TITAN-CONTROLLER-BOARD-/221867035009?hash=item33a84e4981

this may be a dumb question but could someone just 'homebrew' clone such a board....? Not saying it is practical but for folk on here with the skills and such
is such a thing possible ..even in a mad scientist 'breadboard' type of manner?

Just curious is all with all the electronics talk on Titan fixes how far someone could go with all this ...expertise wise on this thread

ilati

newbie

Activity: 13

Merit: 0

Here is a Titan controller board if anyone needs one: Grin

http://www.ebay.com/itm/KNC-TITAN-CONTROLLER-BOARD-/221867035009?hash=item33a84e4981

GenTarkin

legendary

Activity: 2450

Merit: 1002

After some issues encountered w/ my original v.99 build, Im hoping they are resolved and being tested now. If all goes well v.99 will be available soon =)

TXSteve

sr. member

Activity: 342

Merit: 250

Quote from: zybc on August 28, 2015, 02:01:06 PM

Quote from: TXSteve on August 28, 2015, 11:20:51 AM

Quote from: Prelude on August 28, 2015, 11:00:35 AM

You were able to fix dead or zombie dies? If so, please share details! I've got 6 dies that I'd like to get working again.

he's having problems with the whole cube

Actually, now it seems to be a Controller Card problem.. But no idea how to fix it yet. Previously it was workin on 2.0 ver, than came to 1.97, now working versions are 1.02-1.04 but with cycle restarts.. every 20 secs. So no real coins to find.. ^(

1500uf didn't work, so try using the right part 1000uf

other than that I don't have any ideas ... good luck

zybc

newbie

Activity: 28

Merit: 0

Quote from: TXSteve on August 28, 2015, 11:20:51 AM

Quote from: Prelude on August 28, 2015, 11:00:35 AM

You were able to fix dead or zombie dies? If so, please share details! I've got 6 dies that I'd like to get working again.

he's having problems with the whole cube

Actually, now it seems to be a Controller Card problem.. But no idea how to fix it yet. Previously it was workin on 2.0 ver, than came to 1.97, now working versions are 1.02-1.04 but with cycle restarts.. every 20 secs. So no real coins to find.. ^(

mindtrip

legendary

Activity: 1167

Merit: 1009

Quote from: GenTarkin on August 28, 2015, 11:07:29 AM

Quote from: mindtrip on August 28, 2015, 09:57:28 AM

I tried to upgrade to build v.99 today i got this error did you disable the update?

Yes, I disabled the update. Also, there is a gigantic issue w/ the ugprade button, I didnt realize this but wget was failing to install on my initial upgrade scripts etc.... I will be rereleasing the "upgrade" package for v.98 & v.99 once its fixed. I will then reenable v.99 as well =)
If you flashed my full v.98 img, it should be unaffected.

Sorry for the confusion.

Will post when they are ready to rollout.

No problem let me know when its ready and ill upgade to the latest build

TXSteve

sr. member

Activity: 342

Merit: 250

Quote from: Prelude on August 28, 2015, 11:00:35 AM

You were able to fix dead or zombie dies? If so, please share details! I've got 6 dies that I'd like to get working again.

he's having problems with the whole cube

GenTarkin

legendary

Activity: 2450

Merit: 1002

Quote from: mindtrip on August 28, 2015, 09:57:28 AM

I tried to upgrade to build v.99 today i got this error did you disable the update?

Yes, I disabled the update. Also, there is a gigantic issue w/ the ugprade button, I didnt realize this but wget was failing to install on my initial upgrade scripts etc.... I will be rereleasing the "upgrade" package for v.98 & v.99 once its fixed. I will then reenable v.99 as well =)
If you flashed my full v.98 img, it should be unaffected.

Sorry for the confusion.

Will post when they are ready to rollout.

Prelude

legendary

Activity: 1596

Merit: 1000

Quote from: zybc on August 28, 2015, 10:18:42 AM

Quote from: TXSteve on August 28, 2015, 09:54:30 AM

did you try plugging the "bad" cube into one of the other asic connectors? and try putting a known good cube on the "bad" asic4 connector, -- just to double check before you tear the board apart

btw the worst that should happen from replacing that cap is that it wasn't bad and you still have the same problem after it is replaced. Since you replaced it with a different cap and now you are getting different symptoms, that just seems to say it isn't the right cap for this circuit? just trying to think logically before you dissect the whole board Sad

after this everything stops

The asic6 was thermally modified with Indium and some screws and thrmal grease between plates..

You were able to fix dead or zombie dies? If so, please share details! I've got 6 dies that I'd like to get working again.

TXSteve

sr. member

Activity: 342

Merit: 250

I guess whatever you did to asic6 do to asic 3 ,4 & 5

zybc

newbie

Activity: 28

Merit: 0

Quote from: TXSteve on August 28, 2015, 09:54:30 AM

did you try plugging the "bad" cube into one of the other asic connectors? and try putting a known good cube on the "bad" asic4 connector, -- just to double check before you tear the board apart

btw the worst that should happen from replacing that cap is that it wasn't bad and you still have the same problem after it is replaced. Since you replaced it with a different cap and now you are getting different symptoms, that just seems to say it isn't the right cap for this circuit? just trying to think logically before you dissect the whole board Sad

http://static2.keep4u.ru/2015/08/28/asic-33.th.png

after this everything stops

The asic6 was thermally modified with Indium and some screws and thrmal grease between plates..

mindtrip

legendary

Activity: 1167

Merit: 1009

I tried to upgrade to build v.99 today i got this error did you disable the update?

TXSteve

sr. member

Activity: 342

Merit: 250

Quote from: zybc on August 28, 2015, 09:50:15 AM

Quote from: TXSteve on August 28, 2015, 09:17:56 AM

I'd try a 1000uf, afterall we are troubleshooting, have to see what works and doesn't

here's the pic of the spreader removed

http://s18.postimg.org/py0qzeio7/1_kch2zw_Ak_GWOPBBu2o_Sg_OEg.png

looks like he used that little precision screwdriver to pry on the upper left corner, I am not saying to try it, just showing you the picture -- I've wanted to look under there myself but don't want to risk losing a good board

and I guess that's not a Titan board, maybe a Neptune??

Thanks

Now we have some work to do )))
It is beter to use the razor from shaving blade than that small precision screwdriver

We just cleaned the controller board and also we have tested it with multimeter. The ASIC4 connector is bad. It always do not show the chip temp. So now we have an idea that the problem is not in the CUBES but the controller board. One pin of ASIC4 connector has different voltage in comparision with same pins of others 5 connectors Sad

did you try plugging the "bad" cube into one of the other asic connectors? and try putting a known good cube on the "bad" asic4 connector, -- just to double check before you tear the board apart

btw the worst that should happen from replacing that cap is that it wasn't bad and you still have the same problem after it is replaced. Since you replaced it with a different cap and now you are getting different symptoms, that just seems to say it isn't the right cap for this circuit? just trying to think logically before you dissect the whole board Sad

zybc

newbie

Activity: 28

Merit: 0

Quote from: TXSteve on August 28, 2015, 09:17:56 AM

I'd try a 1000uf, afterall we are troubleshooting, have to see what works and doesn't

here's the pic of the spreader removed

http://s18.postimg.org/py0qzeio7/1_kch2zw_Ak_GWOPBBu2o_Sg_OEg.png

looks like he used that little precision screwdriver to pry on the upper left corner, I am not saying to try it, just showing you the picture -- I've wanted to look under there myself but don't want to risk losing a good board

and I guess that's not a Titan board, maybe a Neptune??

Thanks

Now we have some work to do )))
It is beter to use the razor from shaving blade than that small precision screwdriver

We just cleaned the controller board and also we have tested it with multimeter. The ASIC4 connector is bad. It always do not show the chip temp. So now we have an idea that the problem is not in the CUBES but the controller board. One pin of ASIC4 connector has different voltage in comparision with same pins of others 5 connectors Sad

TXSteve

sr. member

Activity: 342

Merit: 250

Quote from: zybc on August 28, 2015, 09:09:25 AM

Quote from: TXSteve on August 28, 2015, 08:37:49 AM

did you try it with 1000uf??

google says: sometimes a higher uf is acceptable, but not always ... depends on the circuit :| isn't 1000uf to 1500uf a pretty big jump?

Google is correct. We can make circuits for noise reduction and for another purposes. So if this is noise reduction purpose then there will be the lower limit for capacitor NOT LESS, but if it is some oscillating circuit then higher capacitor will change the frequency or amplitude.. this was our hand book

http://users.physics.harvard.edu/~horowitz/aoe/

I'd try a 1000uf, afterall we are troubleshooting, have to see what works and doesn't

here's the pic of the spreader removed

http://s18.postimg.org/py0qzeio7/1_kch2zw_Ak_GWOPBBu2o_Sg_OEg.png

looks like he used that little precision screwdriver to pry on the upper left corner, I am not saying to try it, just showing you the picture -- I've wanted to look under there myself but don't want to risk losing a good board

and I guess that's not a Titan board, maybe a Neptune??

zybc

newbie

Activity: 28

Merit: 0

Quote from: TXSteve on August 28, 2015, 08:37:49 AM

did you try it with 1000uf??

google says: sometimes a higher uf is acceptable, but not always ... depends on the circuit :| isn't 1000uf to 1500uf a pretty big jump?

Google is correct. We can make circuits for noise reduction and for another purposes. So if this is noise reduction purpose then there will be the lower limit for capacitor NOT LESS, but if it is some oscillating circuit then higher capacitor will change the frequency or amplitude.. this was our hand book

http://users.physics.harvard.edu/~horowitz/aoe/

TXSteve

sr. member

Activity: 342

Merit: 250

Quote from: zybc on August 28, 2015, 09:01:07 AM

Quote from: TXSteve on August 28, 2015, 08:37:49 AM

Quote from: zybc on August 28, 2015, 08:19:47 AM

We are testing the CUBE now. The temperatures are very good. But problem is that it works for 10 sec and restarts, works/restarts and so on.. So we can not test it continiously...
Previously the 1.02-1.04 firmawe worked normally, but now it is like this Sad

The 1.05 firmware does not see any cube..

did you try it with 1000uf??

The another, working, Cube is showing the same picture!

We are thinking now about the top cap of the chip. We have some experience of removing the CPU top plate to see the crystall under it! And we were monitoring the chip and DCDC temperatures now. So we are now thinking about that if the crystall copper cap is not soldered and is sticked with the thermal grease so it could become dry and do not remove heat effectively. Because now it is staring mining the temperatures come to 70 degree and then everything STOPs and restarts.. It looks like overheat..

it should go over 100c before it overheats

someone posted a picture of that spreader plate removed, I think it was gentarkin -- I've never taken it off so I don't know how it is fastened

zybc

newbie

Activity: 28

Merit: 0

Quote from: TXSteve on August 28, 2015, 08:37:49 AM

Quote from: zybc on August 28, 2015, 08:19:47 AM

We are testing the CUBE now. The temperatures are very good. But problem is that it works for 10 sec and restarts, works/restarts and so on.. So we can not test it continiously...
Previously the 1.02-1.04 firmawe worked normally, but now it is like this Sad

The 1.05 firmware does not see any cube..

did you try it with 1000uf??

The another, working, Cube is showing the same picture!

We are thinking now about the top cap of the chip. We have some experience of removing the CPU top plate to see the crystall under it! And we were monitoring the chip and DCDC temperatures now. So we are now thinking about that if the crystall copper cap is not soldered and is sticked with the thermal grease so it could become dry and do not remove heat effectively. Because now it is staring mining the temperatures come to 70 degree and then everything STOPs and restarts.. It looks like overheat..

johnyj

legendary

Activity: 1988

Merit: 1012

Beyond Imagination

I found out that reduce the Neptune voltage by 3-4 steps and lower the frequency to 375 Mhz will make the efficiency close to 0.5w/gh, and you can use a very quiet fan while still keep the DC temp below 70c

TXSteve

sr. member

Activity: 342

Merit: 250

Quote from: zybc on August 28, 2015, 08:19:47 AM

Quote from: TXSteve on August 28, 2015, 08:11:47 AM

Quote from: zybc on August 28, 2015, 07:27:59 AM

Look guys

As my partner and I have graduated Robotics Faculty here in Moscow we have some vision on electronics

And as we see, this Capacitor is set in parallel to whole 12V DC input, so from here we desided that the meaning of this 1000uF Capacitor is electrical nose filter that is generating by BIG DC FAN. So if we are correct in our proposition then the volume of capacitor in this case is bigger-better!

Now we are upgrading thermal interfaces. We will put Indium on the chip and improve other thermal connections..

ok, I suppose you can always pop in a 1000uf .. let us know how you make out

not sure that your thinking is 100% correct tho, because I was testing the pcb with fan disconnected ie, no noise ??

(I got tired of putting cube back together just to test it so I did the vegas trick of just setting the heat sink loose on top and turning MHz way down to generate less heat)

We are testing the CUBE now. The temperatures are very good. But problem is that it works for 10 sec and restarts, works/restarts and so on.. So we can not test it continiously...
Previously the 1.02-1.04 firmawe worked normally, but now it is like this Sad

The 1.05 firmware does not see any cube..

did you try it with 1000uf??

google says: sometimes a higher uf is acceptable, but not always ... depends on the circuit :| isn't 1000uf to 1500uf a pretty big jump?

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