Why did I read reverse the power on secondary board twice. Hell Ill try it.
Sparks a lot, no fans fire.
Topic: Cointerra Terraminer Half Speed PSU/Board problem?? - page 2. (Read 9448 times)
Sparks a lot, no fans fire.
Why did I read reverse the power on secondary board twice. Hell Ill try it.
So I got the board out. Rectangle Pyrex dish and 2 bottles of 99 iso alcohol. Old tooth brush that vibrates too. Soaked, washed, scrubbed, and rinsed the board with iso. Dried it off with some towels and waited about an hour and it still has a short between the positive and negative. There is a component that has burnt out but I cant physically see any, even under a lighted magnifying glass. anyone have any suggestions on what to do next? Seems like more and more people are getting the same problem.
Yup. This forum really needs to be combined here... https://bitcointalk.org/index.php?topic=641998.new#new
So I got the board out. Rectangle Pyrex dish and 2 bottles of 99 iso alcohol. Old tooth brush that vibrates too. Soaked, washed, scrubbed, and rinsed the board with iso. Dried it off with some towels and waited about an hour and it still has a short between the positive and negative. There is a component that has burnt out but I cant physically see any, even under a lighted magnifying glass. anyone have any suggestions on what to do next? Seems like more and more people are getting the same problem.
BFL part two!!
I'm located in Texas, I can make a trip down there to check stuff out for members if anyone would like. I could also camp out and see if anyone shows up to the building for a week, but that would require donations for hotel rooms. There is probably a member located in Austin that it might be easier for them to check out, just finding someone to do it is the big thing.
FYI
I was in Texas last weekend, im based in sweden, so I decided to have a drive down to cointerra and found their building. CLOSED
Not a car in the car park, and only 1 sign showing Cointerra were there.
Does not look good to me as they are supposed to be working hard on the new 2TH machines.
joolz
I was in Texas last weekend, im based in sweden, so I decided to have a drive down to cointerra and found their building. CLOSED
Not a car in the car park, and only 1 sign showing Cointerra were there.
Does not look good to me as they are supposed to be working hard on the new 2TH machines.
joolz
I also now have the "COLOD" Cointerra Orange Light Of Death if anyone has an idea on how this can be fixed please post!
backstory...
Got he miner march 5th. Sometime in april the webgui showed only one cta. Opened it up to find one of the power blocks came off the main board. soldered a piece of wire to the board and to the block cuz I could not get the block hot enough to melt solder under it. Any ways, it worked. was always HOT. Tried new thermal paste. Still hot. Tried liquid pro got it cooler and one of the pumps stopped working so it would got to 120c and shut off. Took the pump apart and pulled out a bunch of white butter/grease out of it and the white rubber"channel" inside the pump. Pump works again and now the whole board wont power... no leds at all and on the power supply it shows one green and one orange light. Its the board closer to the psus. after all the thermal paste and liquid pro usage and frustration of taking it a part a thousand times i think i killed it. Last try to bring it back to life will be to remove the board from the case completely and give it a nice scrub down with iso alcohol.
backstory...
Got he miner march 5th. Sometime in april the webgui showed only one cta. Opened it up to find one of the power blocks came off the main board. soldered a piece of wire to the board and to the block cuz I could not get the block hot enough to melt solder under it. Any ways, it worked. was always HOT. Tried new thermal paste. Still hot. Tried liquid pro got it cooler and one of the pumps stopped working so it would got to 120c and shut off. Took the pump apart and pulled out a bunch of white butter/grease out of it and the white rubber"channel" inside the pump. Pump works again and now the whole board wont power... no leds at all and on the power supply it shows one green and one orange light. Its the board closer to the psus. after all the thermal paste and liquid pro usage and frustration of taking it a part a thousand times i think i killed it. Last try to bring it back to life will be to remove the board from the case completely and give it a nice scrub down with iso alcohol.
nope I havent solved this issue yet.
If anybody have experience fixing this miners let me know, I can pay for the service
Venom,
I am having the same power problem you had. One board has a problem but if you disconnect the power supply from the board it reads a solid 12V. When I connect the power, there is a spark and then the PSU shuts down and the light goes orange.
Have you solved this yet???
If anybody have experience fixing this miners let me know, I can pay for the service
Thank you, i'll try this next.
its likely a coincidence, usually when you get extra CTAs in the web interface it means the board has failed and reset, when it reconnects to cgminer it is added as a new device, i think i have a rough idea of whats likely happened but its only a somewhat educated guess. when it was running at 1.2 chances are one core on one of the boards was overheating and being throttled or even temporarily disabled resulting in the lowered hash rate, however after it hits a certain temp (i believe around 120C) the board shuts down completely, it then restarts and gets re-added then fails again.
if you open up the rig and connect the board to cgminer with cointerra enabled youll get better error reporting, by no means is it concise but it will at least tell you when the board resets or gets disabled, sadly ive never gotten a board back to full power but i have got some from dead to running at half power. if you happen to be lucky then it may be as easy as replacing the thermal compound on the problem board, but sadly ive found its rarely that easy
if you open up the rig and connect the board to cgminer with cointerra enabled youll get better error reporting, by no means is it concise but it will at least tell you when the board resets or gets disabled, sadly ive never gotten a board back to full power but i have got some from dead to running at half power. if you happen to be lucky then it may be as easy as replacing the thermal compound on the problem board, but sadly ive found its rarely that easy
New miner here, forgive me for my ignorance. 
I'm also having a problem with mine. I bought it and the guy said it had a "bad core" but it still sat stable at 1.2TH with the power stepping set to 6. I just switched my password and now its freaking out, can't get anything over 900 GH for any period of time. It originally only showed CTA0 & CTA1, now they will go off and other CTA's (CTA5, CTA2, etc) are showing up and turning off. I can solve this by restarting the machine but still cannot get back to the 1.2TH i was sitting at. How did changing my pool password effect this?
**edit**
Well after playing around some more it seems like it has settled back down @ 1.2TH but for some reason it would only do this with the power setting on 5 instead of 6 like it used to be?
Can anyone tell me if anything in this looks off?
https://i.imgur.com/75zn5rt.jpg
I'm also having a problem with mine. I bought it and the guy said it had a "bad core" but it still sat stable at 1.2TH with the power stepping set to 6. I just switched my password and now its freaking out, can't get anything over 900 GH for any period of time. It originally only showed CTA0 & CTA1, now they will go off and other CTA's (CTA5, CTA2, etc) are showing up and turning off. I can solve this by restarting the machine but still cannot get back to the 1.2TH i was sitting at. How did changing my pool password effect this?
**edit**
Well after playing around some more it seems like it has settled back down @ 1.2TH but for some reason it would only do this with the power setting on 5 instead of 6 like it used to be?
Can anyone tell me if anything in this looks off?
https://i.imgur.com/75zn5rt.jpg
no theyre always like that (well i havent seen brown ground cables before only black) its how i worked out that you can switch them round, still not sure why it fixed the prob though
If anybody has the knowledge in how to fix this machine PM me so we can discuss a price.
hmm?
but the other board has the same layout, what makes you think that will make any difference?? I notices that if the power cables are not connected to the main board there is 12v going thru the wires but as soon as I plug the wires to the board there is a spark and the psu goes from all green to green and orange :S
It looks a bit closer to the orange component.
but the other board has the same layout, what makes you think that will make any difference?? I notices that if the power cables are not connected to the main board there is 12v going thru the wires but as soon as I plug the wires to the board there is a spark and the psu goes from all green to green and orange :S
Try replacing the metal washer in the center of the power board with a non-conductive washer.
It looks like it could be shorting.
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