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Bitcoin / Hardware / Re: Cointerra Terraminer Half Speed PSU/Board problem??

on: July 11, 2014, 02:18:34 PM

Quote from: ckolivas on July 11, 2014, 07:23:00 AM Quote from: bitcoinbearhk on July 10, 2014, 01:43:37 AM Can someone summarize the possible reasons and solutions to the "yellow light of death" problem? Yellow light means there's a short somewhere. Only real solution is likely to be RMA. I emailed them asking for a new board. they said they don't sell parts..... out of warranty because i opened the case to dust....... have to send the whole unit to TX. they will test it and if its the board it will cost $1200 and about 3 weeks at least for a new one..... needless to say.. NO THANKS!! Just bought a whole perfectly working terraminer for 1800 of Craigslist. At this point i will hold on to my "shorted" board til we are all 100% sure its not fixable. i bet its some stupid little component that goes out on all of ours that have no power / no fans / yellow / orange led on the power supply with the bad board.

Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial

on: July 11, 2014, 12:57:05 AM

Nothing plugged into the board and it still doesn't work. No leds and the orange led lights up on the power supply.

Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial

on: July 10, 2014, 07:02:27 PM

has anyone here ever recover from Orange / yellow light on the power supply issue? Like half the fans only turn on? There is apparently a short on the board. I got as far as pulling the entire board out and washing and scrubbing it with iso 99% and it still has a short. looked through a lighted magnifying glass at ever single component and can not see anything fried or physically damaged... any suggestions?

Bitcoin / Hardware / Re: Cointerra Terraminer Half Speed PSU/Board problem??

on: July 10, 2014, 06:53:35 PM

No idea how to fix the yellow light issue. i have the same issue. as for the pumps... there can be many problems. the inside of the copper plate may be gunked up. or air in the pump. does the pump spin? get a 12v power brick and only power the pump. should sound like a muffled humming. if its loud you have air. did you try liquid pro for the paste? I'll buy your broken rigs. Private Message ME

Bitcoin / Hardware / Re: Cointerra Terraminer Half Speed PSU/Board problem??

on: July 09, 2014, 07:51:35 PM

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.

Bitcoin / Hardware / Re: Cointerra Terraminer Half Speed PSU/Board problem??

on: July 07, 2014, 07:43:45 PM

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.

Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial

on: June 25, 2014, 08:28:15 PM

finally got it!! took out both white rubber things from the inside of each pump/waterblock. Both were gunked up with white "butter"/paste type of sustance cleabed it all out and now the pumps are pumping. All hoses are same temp. I left both the rubber/silicon out. But the temps are very high still. But atleast its hashing. I think its time for liquid pro. thats my last hope to cool these down. that or building a custom watercooling system and seeing if that does it. It seems like these pumps dont move alot of water.

Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial

on: June 24, 2014, 06:20:09 AM

Quote from: scriber on June 24, 2014, 03:04:43 AM Quote from: KOTEKPL on June 23, 2014, 11:35:57 PM I am having the same issue as you guys. One cta goes to 120c right away and shuts down. it was working for for the past 3 months. the other CTA runs amazing over 800gh all the time the "bad" one always ran hotter. i replaced the paste about 4 times now and like 4 cores go to the sky and it stops. at its different ones just seems like something is shorting out or i dont know what the hell is happing. any input would be great. i used ic diamond themal paste on all chips the "good booard temp are way down and it hashes amazing the "bad board is still HOT! edit did some tinkering. found that letting the board cool down and then just start the one sounds like a fan in one of the pumps is ticking... also found that the "out" side of both cores on the "bad board" are really hot and the "in"side is cold. On the "good" board both side are equally Warm cound it be a pump issue? both pumps show speed but not as fast as the other board. if the fins inside the pump broke off the the pump would stiill spin just be clogged/not going anyhting? im really tring to figure this out. already had one of the power blocks that the soldered on the board break off that's why i opened it up in the first place. fixed that and now this heat/power/idk/short issue Does sound like a pump issue from what you described. Perhaps the impeller is damaged especially if its rpm is not up to speed like your good board. Contact the company who makes the coolers, they are located in canada I believe. Tell them how terrible Cointerra support is and you noticed they are using their product which might have failed on you. Btw I would not use thermal paste on these units, probably a good reason not to is that it continues to overheat and youve done the job 4 times. Use liquid pro its tried and proven here by numerous people including myself The bad board pumps are 300rpm higher then the good board. why did the paste work so well with my other board? i will have to give the liquid pro a try... i ended up taking one of the bad board coolers off and took the copper plate off the bottom and found a white rubber/cyclone piece inside. its suppose to work as a channel for the water to go on the copper plate fins i guess. thing is it was gunked up with this white residue and the water had no way to get to the fins... ended u p taking the whole white rubber piece out and now have one core up and hashing at 400gh. still hot as helll but at least its hashing. we will see for how long... o and the hoses on that core are now the same temp.. i will do the second one tomorrow and take some pics for reference.

Bitcoin / Hardware / Re: Cointerra Hardware Support **Unofficial

on: June 23, 2014, 11:35:57 PM

I am having the same issue as you guys. One cta goes to 120c right away and shuts down. it was working for for the past 3 months. the other CTA runs amazing over 800gh all the time the "bad" one always ran hotter. i replaced the paste about 4 times now and like 4 cores go to the sky and it stops. at its different ones just seems like something is shorting out or i dont know what the hell is happing. any input would be great. i used ic diamond themal paste on all chips the "good booard temp are way down and it hashes amazing the "bad board is still HOT! edit did some tinkering. found that letting the board cool down and then just start the one sounds like a fan in one of the pumps is ticking... also found that the "out" side of both cores on the "bad board" are really hot and the "in"side is cold. On the "good" board both side are equally Warm cound it be a pump issue? both pumps show speed but not as fast as the other board. if the fins inside the pump broke off the the pump would stiill spin just be clogged/not going anyhting? im really tring to figure this out. already had one of the power blocks that the soldered on the board break off that's why i opened it up in the first place. fixed that and now this heat/power/idk/short issue

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