bitmine CoinCraft Series Users Thread - Troubleshooting, Efficiency, O/C

[nox_]

Upon closer inspection of the board.

One broken connector:

http://s24.postimg.org/7bs8crx8l/WP_20140521_20_08_36_Pro.jpg

One more burnt out PCB:

http://s27.postimg.org/rj8oyxlbn/WP_20140521_20_08_23_Pro.jpg

[Gogreen]

Upon closer inspection of the board.

One broken connector:

http://s24.postimg.org/7bs8crx8l/WP_20140521_20_08_36_Pro.jpg

One more burnt out PCB:

http://s27.postimg.org/rj8oyxlbn/WP_20140521_20_08_23_Pro.jpg

I have a burnt pcb too but mine can still work. I fix back in leaving a small gag without touching the heatsink.
I suspect that burnt portion is cause by the heatsink. The temp should be around. 48 to 58'c  no more than. 59
Put a box fan or household fan right in front of the coincraftdesk where they are sucking the air . It shild be stable when. You got your replacement.

[nox_]

Upon closer inspection of the board.

One broken connector:

http://s24.postimg.org/7bs8crx8l/WP_20140521_20_08_36_Pro.jpg

One more burnt out PCB:

http://s27.postimg.org/rj8oyxlbn/WP_20140521_20_08_23_Pro.jpg

I have a burnt pcb too but mine can still work. I fix back in leaving a small gag without touching the heatsink.
I suspect that burnt portion is cause by the heatsink. The temp should be around. 48 to 58'c  no more than. 59
Put a box fan or household fan right in front of the coincraftdesk where they are sucking the air . It shild be stable when. You got your replacement.

Thanks, Bitmine.ch are already sending out a replacement PCB / backplane for the one that is totally burnt out which is a really good turn around (Already received the tracking number from UPS).

I'm waiting to hear on the other broken PCB as I don't think the ticket updated last night so have opened a separate ticket.

On another note, the final miner out of my order only has four out of five working ASICs and crashes with a segmentation fault after a few minutes.

[maxis]

Hi all,

I have a problem with my bitmine desk 1 TH
Since yesterday the mining is strange:

in nominal mode: only 4/5 module works !! = about 850 GH
in turbo light mode: all module works = about 1160 GH
in power save mode: 5 module works = about 930 GH

temp is about 55-60 C

Can you help me to resolve my problem please
 

[nhminer]

Hi all,

I have a problem with my bitmine desk 1 TH
Since yesterday the mining is strange:

in nominal mode: only 4/5 module works !! = about 850 GH
in turbo light mode: all module works = about 1160 GH
in power save mode: 5 module works = about 930 GH

temp is about 55-60 C

Can you help me to resolve my problem please
 

I had the exact same problem -- check the fans and make sure they are both running well.  One of mine had failed

~nhminer

[maxis]

Hi all,

I have a problem with my bitmine desk 1 TH
Since yesterday the mining is strange:

in nominal mode: only 4/5 module works !! = about 850 GH
in turbo light mode: all module works = about 1160 GH
in power save mode: 5 module works = about 930 GH

temp is about 55-60 C

Can you help me to resolve my problem please
 

I had the exact same problem -- check the fans and make sure they are both running well.  One of mine had failed

~nhminer

All fun running well ...

How you do to resolve this problem?

Because all module works in Turbo and Save mode but not in Normal mode
very strange

[jimmy3dita]

Try to upload again the firmware, I have to do it ocne every 10 days to keep the hashpower at the maximum.

It seems to me that if the temps go too high the system disables chips that are doing too much errors, and the way to "revive" them is uploading again the firmware.

[Burebista]

Try to upload again the firmware, I have to do it ocne every 10 days to keep the hashpower at the maximum.

It seems to me that if the temps go too high the system disables chips that are doing too much errors, and the way to "revive" them is uploading again the firmware.

I do this also every week and most important i tried to keep modules cooled with some extra independent fans 220v some of 35W that i took from an old indoor ventilator.i made some modifications at the back side of the box where i added two fans that have powerful airflow over the modules.original two fans of unit i added at the front side to help take air out from the case area but can work well even without those two.

yes it doesn't look so estetic and some might get scared but i don't care cos i care to work stable and properly at maximum power until the balance between energy consumed and btc mined is still ok for my pocket.
i took the cover of the case out and put fans to blow air right on the modules in this way i have this result and work stable,unit is outside of course and when out is some of 22-26 celsius normal temp for summer unit not goes over 45,so is perfect.

now i have 4 modules and work like you see

https://i.imgur.com/9H8EiOx.jpg
https://i.imgur.com/a3NBuEX.jpg
https://i.imgur.com/iROKqwY.jpg
https://i.imgur.com/k2A99Qo.jpg

every time i stop the extra fans and temp goes over 50 celsius errors start to appear and speed on the pool goes down.most important is to keep it cooled as much you can.

by the way i saw update on the site is not working anymore,is that same for you guys? ''download'' is not linked anymore.

[maxis]

Burebista,

Thanks for your feedback.

I have 1TH desk and temp is always 60C


PS. I tried to update the software but there no more link to download it  on bitmine site 

[Burebista]

Burebista,

Thanks for your feedback.

I have 1TH desk and temp is always 60C


PS. I tried to update the software but there no more link to download it  on bitmine site 

I don't advice anyone to do what i did on my unit,that was my choice.
but you can do whatever it takes to cool it without to modify the case.
if you run it outside you can try to take up cover and put near one indoor ventilator to push airflow right over the modules,there are many options just use your head and your both hands.
what i want to say it that if temp senzor will show you 60 celsius belive me then the pieces from the other side of the radiators of modules are more hot than 60,just do a test try to keep one finger over one integrat piece or to one little radiator on the back side and you will see it's on fire,big part aluminium of the radiator on the senzor place is not so hot.

use something like this to bring cold air from somewhere over the unit modules if you have the chance ,will make the difference
https://i.imgur.com/gi6Z6tq.jpg
https://i.imgur.com/IHqMaQH.jpg

[nhminer]

Burebista,

Thanks for your feedback.

I have 1TH desk and temp is always 60C


PS. I tried to update the software but there no more link to download it  on bitmine site 

I just checked --- try
http://bitmine.ch/download/ccd/firmware/updates/20140425170710/mineros-basic-image-raspberrypi-20140425170710.rootfs.rpi-sdimg.zip

[Mortal]

Try to upload again the firmware, I have to do it ocne every 10 days to keep the hashpower at the maximum.

It seems to me that if the temps go too high the system disables chips that are doing too much errors, and the way to "revive" them is uploading again the firmware.

I do this also every week and most important i tried to keep modules cooled with some extra independent fans 220v some of 35W that i took from an old indoor ventilator.i made some modifications at the back side of the box where i added two fans that have powerful airflow over the modules.original two fans of unit i added at the front side to help take air out from the case area but can work well even without those two.

yes it doesn't look so estetic and some might get scared but i don't care cos i care to work stable and properly at maximum power until the balance between energy consumed and btc mined is still ok for my pocket.
i took the cover of the case out and put fans to blow air right on the modules in this way i have this result and work stable,unit is outside of course and when out is some of 22-26 celsius normal temp for summer unit not goes over 45,so is perfect.

now i have 4 modules and work like you see

https://i.imgur.com/iROKqwY.jpg

every time i stop the extra fans and temp goes over 50 celsius errors start to appear and speed on the pool goes down.most important is to keep it cooled as much you can.

by the way i saw update on the site is not working anymore,is that same for you guys? ''download'' is not linked anymore.

which settings you are running on the chips?

[Burebista]

turbo ultra

[yslyung]

turbo ultra

how about HW errors ?

pls goto logs/cgminer and see what is your HW error.

Hi Guys, my experience with CCD . . .

i have a 5 module unit came with SF 1200W plat PSU, 3 out of 5 modules are pretty normal low HW errors but the other 2 are high. no idea why. of course the lower the hash rate (settings) the lower the HW error. mining @ eligius miner side & pool side are consistent.

currently running on FW 201404251907

Settings are 825mhz/850mV/4000spi hashing between 1020-1055 gh/s avg temps are about 41 deg C , sensors are relocated at the hottest part/module. my modules are out of the case for improved cooling + noise reduction reasons.

log from cgminer.

Difficulty Accepted=>681205.605469
Pool Rejected%=>0.0751
Network Blocks=>7
Difficulty Rejected=>511.9921875
MHS 15m=>989893.43
Device Rejected%=>0.0738
Pool Stale%=>0.0
Work Utility=>14251.92
Rejected=>1
Elapsed=>2919
Hardware Errors=>157 *3 modules are OK but 2 other is especially high*
Accepted=>1266
Found Blocks=>0
Local Work=>696259
Get Failures=>0
Difficulty Stale=>0.0
Total MH=>2974578253.0
Device Hardware%=>0.0226
Discarded=>1507
Stale=>0
MHS av=>1019022.11
Getworks=>77
MHS 5s=>983778.49
Best Share=>8675711
MHS 1m=>1025353.3
MHS 5m=>1032357.33
Last getwork=>1396326406
Remote Failures=>0
Utility=>26.02

looking fwd to more info abt CCD.

my out of the box setup *relocated the 2 original fans to the bottom to push hot air up*

[Burebista]

Difficulty Accepted=>44324.5100914
Pool Rejected%=>0.0
Network Blocks=>1
Difficulty Rejected=>0.0
MHS 15m=>157290.56
Device Rejected%=>0.0
Pool Stale%=>0.0
Work Utility=>12817.63
Rejected=>0
Elapsed=>162
Hardware Errors=>458
Accepted=>112
Found Blocks=>0
Local Work=>36562
Get Failures=>0
Difficulty Stale=>0.0
Total MH=>154501341.0
Device Hardware%=>1.3029
Discarded=>88
Stale=>0
MHS av=>951309.73
Getworks=>12
MHS 5s=>963289.27
Best Share=>26223
MHS 1m=>900884.64
MHS 5m=>399304.1
Last getwork=>1398446810
Remote Failures=>0
Utility=>41.38

Nice work there.i was thinking to get modules out of the box and run them like that but as are still enough cold i think is fine.don't want to lose more time with all those modification while dif grows like hell.
i dig on Eclipse with those 4 modules and average si 0.035-0.040 btc /24 hours.

today just got an issue,at 50 celsius one module is broken i think.
in turbo ultra looks like this :

Module 1 => 247.27 Gh/s
Module 2 => 89.37 Gh/s
Module 3 => 239.76 Gh/s
Module 4 => 244.03 Gh/s

i did new sd card image recover cooled all modules even when is at 25 celsius don't go more than 100gh module #2.so i guess is broken.bad news for me as anyway no chance to even think at any ROI.i think soon i will just shut it down and move forward.i jumped too late in this bitcoin world and more failed with this machine than any success.

[yslyung]

someone pm'ed me with some problems but imo, i think it can be fixed....

btw here is my reply


as far as i know & with my experience this is what i can advise you to do.

1. again n again, pls make sure all, i mean ALL connections are connected to where they belong. 1 of my miner was not hashing after i swapped SD cards then i realised 1 connector was not properly connected then all was ok !

2. i had 1 blade out of5 was hashing 20ghs slower i was like , a chip is broken checked here and there, HW is fine. it was the software part ! i set the voltage to 850mv then all blades was hashing well at same advertised speed & to my surprise, there was lesser HW errors.

3. add 2 more fans at the front of intake. i bought a 4 pin fan splitter & used a good double sided tape. that should keep the miner cooler. the cooler the better. i swapped the original fans to the front cuz my new fans (delta 4400 rpm) are alot more powerful at the back to suck the hot air out.

hope you fixed your problem. pls let me know or post on the thread if you need more help or discovered something new that can help others too.

oh and also maybe try to swap sd cards or upload a new firmware. i had a problem, the miner hashes away but i can't login to the machine to configure. so i swapped sd cards, it was ok but then i still can't login. solution, i formatted sd card, upload new image & before plugging it in, i reset my router & pc then plug in boot everything up & voila everything works fine now. so far so good.

and also make sure the screws holding the blades are heightened up properly. check the heatsinks too. i used super glue to glue it back in place. it comes loose easily.

i did the raise the backplane connecting all 5 modules by a little so it does not touch the heatsinks to prevent a burn onit. thx for the tip !

[Gogreen]

Yslyumg keep us update on your rig, I did the same thing but only the household fan flowing in. Temp 54 c -  59c  room temp was alittle warm thanks to some s1 lol

[yslyung]

Yslyumg keep us update on your rig, I did the same thing but only the household fan flowing in. Temp 54 c -  59c  room temp was alittle warm thanks to some s1 lol

cool, i have added 2 extra fans & will post some pix when i have time. temps are not too bad. i have relocated the 2 temp sensors near to the chips/hottest part.

[glen123]

Running now with 5 Modules and 1500W PSU
Settings : Power Save moderate  at mostly 890-900 Ghs  and 800 Watt Wall

Difficulty Accepted=>14251456.0
Pool Rejected%=>0.0018
Network Blocks=>174
Difficulty Rejected=>256.0
MHS 15m=>887832.27
Device Rejected%=>0.0018
Pool Stale%=>0.0
Work Utility=>12430.84
Rejected=>1
Elapsed=>69442
Hardware Errors=>0
Accepted=>14933
Found Blocks=>0
Local Work=>14480230
Get Failures=>3
Difficulty Stale=>0.0
Total MH=>61711136789.0
Device Hardware%=>0.0
Discarded=>58105
Stale=>0
MHS av=>888673.81
Getworks=>2326
MHS 5s=>893188.51
Best Share=>12867639
MHS 1m=>888618.66
MHS 5m=>887642.26
Last getwork=>1402931489
Remote Failures=>0
Utility=>12.9



cgminer version 4.3.2 - Started: [2014-06-15 21:54:02]
----------------------------------------------------------------------------------
(5s): 888,17G (avg):888,67Gh/s | A:14964  R:1  HW:0 U:12,9/m  WU:12.430,8/m
ST: -  SS:0  NB: 175  LW: 14514066  GF: 3  RF: 0
Connected to ....
Block: 00000000000000004...  Diff:11,8B  Started: [15:13:06]  Best share: 12,9M
----------------------------------------------------------------------------------
[P]ool management [G]PU management ettings [D]isplay options [Q]uit
BA1 0  0,0C 0,000V | 181,61G/178,86Gh/s | A: 3016 R:0 HW:0 U: 2,60/m
BA1 1  0,0C 0,000V | 178,26G/178,16Gh/s | A: 3035 R:0 HW:0 U: 2,62/m
BA1 2  0,0C 0,000V | 177,86G/178,85Gh/s | A: 3003 R:0 HW:0 U: 2,59/m
BA1 3  0,0C 0,000V |  177,7G/177,45Gh/s | A: 3038 R:1 HW:0 U: 2,62/m
BA1 4  0,0C 0,000V | 172,74G/175,35Gh/s | A: 2872 R:0 HW:0 U: 2,48


Runs good with 37-40 Celsius at mostly 22 Celsius RoomTemp


Dashboard
System Uptime: 5 days, 21:31:06

Glen

[yslyung]

Running now with 5 Modules and 1500W PSU
Settings : Power Save moderate  at mostly 890-900 Ghs  and 800 Watt Wall

Difficulty Accepted=>14251456.0
Pool Rejected%=>0.0018
Network Blocks=>174
Difficulty Rejected=>256.0
MHS 15m=>887832.27
Device Rejected%=>0.0018
Pool Stale%=>0.0
Work Utility=>12430.84
Rejected=>1
Elapsed=>69442
Hardware Errors=>0
Accepted=>14933
Found Blocks=>0
Local Work=>14480230
Get Failures=>3
Difficulty Stale=>0.0
Total MH=>61711136789.0
Device Hardware%=>0.0
Discarded=>58105
Stale=>0
MHS av=>888673.81
Getworks=>2326
MHS 5s=>893188.51
Best Share=>12867639
MHS 1m=>888618.66
MHS 5m=>887642.26
Last getwork=>1402931489
Remote Failures=>0
Utility=>12.9



cgminer version 4.3.2 - Started: [2014-06-15 21:54:02]
----------------------------------------------------------------------------------
(5s): 888,17G (avg):888,67Gh/s | A:14964  R:1  HW:0 U:12,9/m  WU:12.430,8/m
ST: -  SS:0  NB: 175  LW: 14514066  GF: 3  RF: 0
Connected to ....
Block: 00000000000000004...  Diff:11,8B  Started: [15:13:06]  Best share: 12,9M
----------------------------------------------------------------------------------
[P]ool management [G]PU management ettings [D]isplay options [Q]uit
BA1 0  0,0C 0,000V | 181,61G/178,86Gh/s | A: 3016 R:0 HW:0 U: 2,60/m
BA1 1  0,0C 0,000V | 178,26G/178,16Gh/s | A: 3035 R:0 HW:0 U: 2,62/m
BA1 2  0,0C 0,000V | 177,86G/178,85Gh/s | A: 3003 R:0 HW:0 U: 2,59/m
BA1 3  0,0C 0,000V |  177,7G/177,45Gh/s | A: 3038 R:1 HW:0 U: 2,62/m
BA1 4  0,0C 0,000V | 172,74G/175,35Gh/s | A: 2872 R:0 HW:0 U: 2,48


Runs good with 37-40 Celsius at mostly 22 Celsius RoomTemp


Dashboard
System Uptime: 5 days, 21:31:06

Glen

very nice temps & no HW errors !

how did you get the cgminer screen ?

i tried ssh then screen -DR did not work....

TIA