[GROUP BUY WORLDWIDE]BTMine v1 Miner 200GH/s BTC 2.4

[dozerz]

tonight the stock power supply blew, was not overclocked.

on replacing it i now notice at least 5 capacitors have come off the blades.



i replaced the psus and now i get fans power up however the network card is now dead. anyone know how to replace these? assume i can just connect the blades to usb and use cgminer directly?

[stewdk]

Cap would be open circuit right not short.

Not if the capacitor was installed backwards. Which it was. More details to follow after I get the blade back online... IF I get it back online. Things are looking better now than a couple of hours ago at least.

[twib2]

Cap would be open circuit right not short.

Not if the capacitor was installed backwards. Which it was. More details to follow after I get the blade back online... IF I get it back online. Things are looking better now than a couple of hours ago at least.

Backwards?!?  Ouch, their QC doesn't seem to have worked for the Q or the C for the non-early orders. 

[stewdk]

Cap would be open circuit right not short.

Not if the capacitor was installed backwards. Which it was. More details to follow after I get the blade back online... IF I get it back online. Things are looking better now than a couple of hours ago at least.

Backwards?!?  Ouch, their QC doesn't seem to have worked for the Q or the C for the non-early orders. 

Reversed polarity. As bass ackwards as it gets.

[robbcarpdm]

Cap would be open circuit right not short.

Not if the capacitor was installed backwards. Which it was. More details to follow after I get the blade back online... IF I get it back online. Things are looking better now than a couple of hours ago at least.

How on earth did you figure out the Cap was backwards.....

I guess it figures given how many have fallen off

Hey found a new source check your email.....not posting yet until it proves out

[dozerz]

Was out of town this weekend when I noticed on BTCGuild that one of my units had dropped to 0.  I remoted into my desktop here and logged into see it would start to hash and instantly fail.  Temps were in the 90* area.  I was able to get home 24 hours later after I halted the TP-Link, which did nothing except not let it go out to hash.  I took the ENTIRE unit apart and this piece on the second module was sitting on the bottom of the case.



I can see how it was soldered but I have no clue if that is something I can even do.  It's that A 997 330 16V right next to Fuse 1.  Any help I would love you all.

Also to note there are 4 miners there, including this one, NONE of them had any temp. issues just this one.

Yep, that's the same capacitor that fell off one of my boards - for my unit, the ribbon cable connector was putting too much pressure on it and forced it off.  It's easy to resolder, but you have to be generous and make sure you get a really good connection.  Also, make sure the orientation is the same as the other comparable ones on the other modules.  My module came back to life with the capacitor in place but I never saw temps like that nor 0 hashing.  Note that I soldered mine with a bit more play so that the ribbon cable could go around it more easily.

Good luck!

any idea where i can find replacements for these capacitors? i have 2 with snapped legs and googling has brought up nothing.

[mtnminer]

I would suggest check the Mouser online catalog, when I was still in RF Engineer they supplied most of my needs.
http://www.mouser.com/

Mtnminer

Was out of town this weekend when I noticed on BTCGuild that one of my units had dropped to 0.  I remoted into my desktop here and logged into see it would start to hash and instantly fail.  Temps were in the 90* area.  I was able to get home 24 hours later after I halted the TP-Link, which did nothing except not let it go out to hash.  I took the ENTIRE unit apart and this piece on the second module was sitting on the bottom of the case.



I can see how it was soldered but I have no clue if that is something I can even do.  It's that A 997 330 16V right next to Fuse 1.  Any help I would love you all.

Also to note there are 4 miners there, including this one, NONE of them had any temp. issues just this one.

Yep, that's the same capacitor that fell off one of my boards - for my unit, the ribbon cable connector was putting too much pressure on it and forced it off.  It's easy to resolder, but you have to be generous and make sure you get a really good connection.  Also, make sure the orientation is the same as the other comparable ones on the other modules.  My module came back to life with the capacitor in place but I never saw temps like that nor 0 hashing.  Note that I soldered mine with a bit more play so that the ribbon cable could go around it more easily.

Good luck!

any idea where i can find replacements for these capacitors? i have 2 with snapped legs and googling has brought up nothing.

[robbcarpdm]

You simply need an instrument to measure the capacitance

Try checking the reference design

A  cap is a cap is a cap.....but note there is a big difference between low quality and high quality just like PSUs.....  for the SAME reason

[robbcarpdm]

Cap would be open circuit right not short.

Not if the capacitor was installed backwards. Which it was. More details to follow after I get the blade back online... IF I get it back online. Things are looking better now than a couple of hours ago at least.

Backwards?!?  Ouch, their QC doesn't seem to have worked for the Q or the C for the non-early orders. 

Reversed polarity. As bass ackwards as it gets.

I am going to guess you simply compared a work board to a non workin board and looked for what was different??

[Professoruss]

Seems as if one of mine is getting quite a few rejected/hw errors.  Is this normal?

[twib2]

Seems as if one of mine is getting quite a few rejected/hw errors.  Is this normal?

Those are difficulty 1 errors, so it will look like a large number compared to the number of the xxx Diff shares you're submittings.  Better number to check is your DH% down below - and yours looks more than fine at 2-ish%.

(BTW, if you want to compare the Diff 1 errors vs a comparable amount of work - look more to the right at "local work")

Enjoy!

[The Observer]

Wow, i sat on the fence about ordering one of these for over a week, was finally going to make the leap of faith today, but after reading about the TONS of problems everyone who bought one has had, i am glad i didnt order, and dont think i will be in the future. Antminers it is i guess.

[Professoruss]

Seems as if one of mine is getting quite a few rejected/hw errors.  Is this normal?

Those are difficulty 1 errors, so it will look like a large number compared to the number of the xxx Diff shares you're submittings.  Better number to check is your DH% down below - and yours looks more than fine at 2-ish%.

(BTW, if you want to compare the Diff 1 errors vs a comparable amount of work - look more to the right at "local work")

Enjoy!

Thanks for the explanation.  This is my first time looking at this type of interface (my other gear is a stack of singles running off an rPi/raspbian/bfgminer)

[mtnminer]

Well, you were spared about five (5) days ago, as that's is when they closed the sale.  So you sat on the fence way to long.  I believe these Chinese units are definitely for the  electronic savvy only, better than a kit, but definitely a do it yourself unit to a great degree!

Mtnminer

Wow, i sat on the fence about ordering one of these for over a week, was finally going to make the leap of faith today, but after reading about the TONS of problems everyone who bought one has had, i am glad i didnt order, and dont think i will be in the future. Antminers it is i guess.

[dozerz]

What command line to use in cgminer when I get it connected to a pc with usb?

[sikke]

Well, you were spared about five (5) days ago, as that's is when they closed the sale.  So you sat on the fence way to long.  I believe these Chinese units are definitely for the  electronic savvy only, better than a kit, but definitely a do it yourself unit to a great degree!

Mtnminer3

Wow, i sat on the fence about ordering one of these for over a week, was finally going to make the leap of faith today, but after reading about the TONS of problems everyone who bought one has had, i am glad i didnt order, and dont think i will be in the future. Antminers it is i guess.

Yes it is a kit. All the screws are bottom of shipping box      I still love it and now planning to add extra blades. 3 blades could be 330 GH/s

Antminers are way to go for those who want to buy miners and watch them mine not to tinker them.
Antminer is way more power efficient
Antminer is only miner that ships NOW Bitmain is minting $$$ by selling those and not giving chips out to OEM

http://cointerra.com/product/terraminer-iv-2ths-networked-asic-miner-may-batch/

People are still ordering Cointerra 2TH/s that ships in May... wtf.
You can get Antminers with that 6000$ and start hashing next week.

[mtnminer]

I am not trying to excuse BTmine, but I have noticed looking at this forum and others that have Chinese eruptor cubes for sale used, there is a fairly high rate of module failure out of the box new is common!  

So, that leaves us the consumers with facts to consider, Butterfly Labs is slower than molasses flowing up hill in winter, but the units I own from the have worked flawlessly.  So if we want Chinese delivery speed, we will have to deal with Chinese quality issues.

I wish we could have both quality and speed of delivery, but these do not seem to coexist often in the ASIC's world.  As a former RF Engineer I will take the speed of delivery, the best quality I can buy and do some fine tuning and tweaking of the units I purchase.  I will still be ahead of waiting for a January order with a March delivery date if I am lucky.

Mtnminer

[sailem09]

I am not trying to excuse BTmine, but I have noticed looking at this forum and others that have Chinese eruptor cubes for sale used, there is a fairly high rate of module failure out of the box new is common!  

So, that leaves us the consumers with facts to consider, Butterfly Labs is slower than molasses flowing up hill in winter, but the units I own from the have worked flawlessly.  So if we want Chinese delivery speed, we will have to deal with Chinese quality issues.

I wish we could have both quality and speed of delivery, but these do not seem to coexist often in the ASIC's world.  As a former RF Engineer I will take the speed of delivery, the best quality I can buy and do some fine tuning and tweaking of the units I purchase.  I will still be ahead of waiting for a January order with a March delivery date if I am lucky.

Mtnminer

They have no excuse!! all they had to do was wrap the boards in anti static bubble wrap and tape it to the chassis. Just doing that would of prevented all the problems that we are having. Who in there right mind would just leave unscrewed delicate components to free float inside a metal box with pointy fan screws to fly across the pacific ocean in a bumpy ride.

I contacted them about my defective boards and provided pictures of the unboxing and damages. They want me to spend money on shipping which was estimated this morning at $120 to ship them back the defective blades for repair and wait to who knows how many days or weeks to get them back.

[mtnminer]

Actually wrapping the blades in bubble wrap and shipping them uninstalled would not have prevented all the problems!  Bubble wrap does not prevent blown fuses, capacitors soldered on in reverse, cables putting pressure on components causing them to break off or poor solder work!  The blades coming loose in shipping is only part of the problems!

I agree with your statement, but it was very short sighted and not thought through before being written!

mtnminer

I am not trying to excuse BTmine, but I have noticed looking at this forum and others that have Chinese eruptor cubes for sale used, there is a fairly high rate of module failure out of the box new is common!  

So, that leaves us the consumers with facts to consider, Butterfly Labs is slower than molasses flowing up hill in winter, but the units I own from the have worked flawlessly.  So if we want Chinese delivery speed, we will have to deal with Chinese quality issues.

I wish we could have both quality and speed of delivery, but these do not seem to coexist often in the ASIC's world.  As a former RF Engineer I will take the speed of delivery, the best quality I can buy and do some fine tuning and tweaking of the units I purchase.  I will still be ahead of waiting for a January order with a March delivery date if I am lucky.

Mtnminer

They have no excuse!! all they had to do was wrap the boards in anti static bubble wrap and tape it to the chassis. Just doing that would of prevented all the problems that we are having. Who in there right mind would just leave unscrewed delicate components to free float inside a metal box with pointy fan screws to fly across the pacific ocean in a bumpy ride.

I contacted them about my defective boards and provided pictures of the unboxing and damages. They want me to spend money on shipping which was estimated this morning at $120 to ship them back the defective blades for repair and wait to who knows how many days or weeks to get them back.

[sacskate]

I'm having problems running my rig on the ethernet port I installed in my garage. It works fine with the one I installed in my house. I think it might be a latency issue. I can ping openwrt.org from it. This is what it does over and over.

Code:

Fri Jan 24 00:57:26 2014 daemon.info sysinit: ntpd: reply from 204.2.134.163: reach 0x01 offset -15.189010 delay 30.399506 status 0x24 strat 3 refid 0xcc0286a2 rootdelay 0.005325
Fri Jan 24 00:57:26 2014 daemon.info sysinit: ntpd: reply from 192.210.206.5: reach 0x01 offset -15.027693 delay 30.135224 status 0x24 strat 2 refid 0x84a30467 rootdelay 0.024186
Fri Jan 24 00:57:26 2014 daemon.info sysinit: ntpd: reply from 128.184.34.53: reach 0x01 offset -7.427351 delay 15.043867 status 0x24 strat 3 refid 0xa9fe0001 rootdelay 0.012009

Code:

PING openwrt.org (78.24.191.177): 56 data bytes
64 bytes from 78.24.191.177: seq=0 ttl=43 time=206.437 ms
64 bytes from 78.24.191.177: seq=1 ttl=43 time=202.391 ms
64 bytes from 78.24.191.177: seq=2 ttl=43 time=202.665 ms
64 bytes from 78.24.191.177: seq=3 ttl=43 time=201.731 ms
64 bytes from 78.24.191.177: seq=4 ttl=43 time=204.044 ms

--- openwrt.org ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 201.731/203.453/206.437 ms