Antminer S9 dead hash board repair needed - page 2.

bigGG

newbie

Activity: 10

Merit: 0

Quote from: MinerMEDIC on January 24, 2018, 04:27:40 PM

Quote from: bigGG on January 23, 2018, 03:35:00 PM

Bitmain Warranty did not say what the problem was. The board they repaired is still running fine 3 months on.

I was a bit surprised as I thought they may just return me any old repaired board but it was actually the same board I sent out there. I recorded the board serial number before it went and the same board came back Smiley I did have to mail them quite a few times for status updates and the were a bit slow replying to mails.

It cost me £18 to ship to the US $175 for the repair, $25 for the postage US to UK and then, the real stinger, £46 import duty.

If you look real close to you see any new chips? Board modifications? I'm doing S9 board repair and the problems that cannot be seen cosmetically are always the most difficult. I'm always gathering information on past repairs (there's no sense in reinventing the wheel).

When the board came back from Bitmain Warranty I had a good look at it and there were no signs of anything being done! Having said that when I took it out the miner there was no sign of any issues.

I now have 2 boards that have stopped functioning, (from my other S9) both power up but show a shorter than normal ASIC status list of 0000 0000 in the miner status web page.

I have switched around control and power cables, but all attempts result in the same display output.

I was just about to send them off to Bitmain Warranty (strangely re-branded as myRig.com, I guess the real Bitmain objected to the use of their name?)

Are you still fixing boards? PM me.

MinerMEDIC

member

Activity: 166

Merit: 82

EET/NASA intern 2013 Bitmain/MicroBT/IPC cert

Quote from: bigGG on January 23, 2018, 03:35:00 PM

Bitmain Warranty did not say what the problem was. The board they repaired is still running fine 3 months on.

I was a bit surprised as I thought they may just return me any old repaired board but it was actually the same board I sent out there. I recorded the board serial number before it went and the same board came back Smiley I did have to mail them quite a few times for status updates and the were a bit slow replying to mails.

It cost me £18 to ship to the US $175 for the repair, $25 for the postage US to UK and then, the real stinger, £46 import duty.

If you look real close to you see any new chips? Board modifications? I'm doing S9 board repair and the problems that cannot be seen cosmetically are always the most difficult. I'm always gathering information on past repairs (there's no sense in reinventing the wheel).

bigGG

newbie

Activity: 10

Merit: 0

Bitmain Warranty did not say what the problem was. The board they repaired is still running fine 3 months on.

I was a bit surprised as I thought they may just return me any old repaired board but it was actually the same board I sent out there. I recorded the board serial number before it went and the same board came back Smiley I did have to mail them quite a few times for status updates and the were a bit slow replying to mails.

It cost me £18 to ship to the US $175 for the repair, $25 for the postage US to UK and then, the real stinger, £46 import duty.

Minestrone

newbie

Activity: 13

Merit: 0

Quote from: bigGG on January 23, 2018, 12:56:25 PM

Hi,
I live in the UK.

One of the boards has stopped hashing on my 14Th s9. It's been running beautifully 24/7 for the last 8 months.

I wonder if anyone knows of a reliable, and reasonably quick, repairer in EU, (or anywhere else for that matter).

I did send a board to Bitmain Warranty last year and they did a good job repairing it, but it took 8 weeks for the round trip to Colorado and back to the UK.

Please PM me if you have any information.

Did bitmain warranty explain the exact problem with the board before they fixed it? and how much did they charge?. I would also be interested in any information on repairers closer to the UK as I also have a dead board on my S9.

bigGG

newbie

Activity: 10

Merit: 0

Hi,
I live in the UK.

One of the boards has stopped hashing on my 14Th s9. It's been running beautifully 24/7 for the last 8 months.

I wonder if anyone knows of a reliable, and reasonably quick, repairer in EU, (or anywhere else for that matter).

I did send a board to Bitmain Warranty last year and they did a good job repairing it, but it took 8 weeks for the round trip to Colorado and back to the UK.

Please PM me if you have any information.

vyking_ua

newbie

Activity: 3

Merit: 0

Quote from: lightfoot on January 19, 2018, 07:34:15 AM

So what's wrong with your board?

Emmm... Today I just get from statistic this:
http://image.prntscr.com/image/SgfI1yY7SVOBLfo9xWD7LQ.png
I tried to reboot, restart, default setting - no result.
In kernel logs I have:

Code:

chain[6]: [63:255] [63:255] [63:255] [63:255] [63:255] [63:255] [63:255] [63:255]
has freq in PIC, will disable freq setting.
chain[6] has freq in PIC and will jump over...
Chain[6] has core num in PIC
Chain[6] ASIC[17] has core num=4
Chain[6] ASIC[61] has core num=2
Check chain[6] PIC fw version=0x03
Chain[J6] has 63 asic
Chain[J7] has 39 asic
set_reset_hashboard = 0x00000040
set_reset_hashboard = 0x00000000
retry Chain[J7] has 39 asic
set_reset_hashboard = 0x00000040
set_reset_hashboard = 0x00000000
retry Chain[J7] has 39 asic
set_reset_hashboard = 0x00000040
set_reset_hashboard = 0x00000000
retry Chain[J7] has 39 asic
set_reset_hashboard = 0x00000040
set_reset_hashboard = 0x00000000
retry Chain[J7] has 39 asic
set_reset_hashboard = 0x00000040
set_reset_hashboard = 0x00000000
retry Chain[J7] has 39 asic
set_reset_hashboard = 0x00000040
set_reset_hashboard = 0x00000000
retry Chain[J7] has 39 asic
Chain[J8] has 63 asic

So, I'm looking for replacements.
On Ebay I tried to find but no hash boards found for S9.
I wrote to BitMain but they have holidays until 25th January and no answer.
So maybe anybody knows or have got any hash board new ?

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Ebay is usually the go-to place, but make sure you can return it if it doesn't work. So what's wrong with your board?

vyking_ua

newbie

Activity: 3

Merit: 0

Anybody knows where can I get new hash boards for Antminer s9 14TH? And if it is possible how much does it cost? I live in Greece and one of my hash boards is off.

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Quote from: JanAndre on January 02, 2018, 09:44:35 AM

Hi guys. I work with some farms in Asia, and they have a lot of broken S9 cards. I was thinking about switching chips around to fix some boards. Have anybody donne this? Is possibility to buy a tool to identify a broken chip?
All ideas are welcome! Total, I am talking about 20-30 S9, so it’s parts available, and money to save.
Regards, Jan

Well, if you want to send some of the boards over I'd be happy to do triage and take a look at them. Sometimes it's not the chips, sometimes it is, and sometimes the board is wrecked from a chip fire (and thus a good source of parts).

Let me know via PM if you would like me to take a look, if there's that many boards to look at I can give it a go.

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Quote from: the_electronrancher on January 02, 2018, 11:59:40 AM

Sure, you could take live chips from a donor device and use them to replace dead chips. The rework is not trivial, though.. you must remove heatsink and epoxy before soldering the new devices.

Do you have experience in this kind of rework? It's is more than just buying a hot air station, unfortunately.

Sort of. I regularly replace 324 pin BGA FPGA units, and can handle most types of QFN packaging. The trick is to use the right kind of flux and take one's time. That said, heat sink removal isn't difficult (the pre-heater can bring the board up to the point where the glue softens), new heat sink epoxy can be found, and although it's deep, pulling the chip is do-able.

However I don't have spare boards yet. So if you have a single unit that needs fixing, it might be better to contact the bitmainwarranty people and see what they charge until I get one.

the_electronrancher

jr. member

Activity: 112

Merit: 4

Sure, you could take live chips from a donor device and use them to replace dead chips. The rework is not trivial, though.. you must remove heatsink and epoxy before soldering the new devices.

Do you have experience in this kind of rework? It's is more than just buying a hot air station, unfortunately.

JanAndre

newbie

Activity: 20

Merit: 0

Hi guys. I work with some farms in Asia, and they have a lot of broken S9 cards. I was thinking about switching chips around to fix some boards. Have anybody donne this? Is possibility to buy a tool to identify a broken chip?
All ideas are welcome! Total, I am talking about 20-30 S9, so it’s parts available, and money to save.
Regards, Jan

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Ok, eggnog all drunk. I just also fixed a pair of S7's and a bunch of Neptune controller boards so once I get these titans completed I can take a look. In the meantime I have another thread about my findings on S7/S9 boards, some of them have real quality control problems (if the heat sinks are not all lined up you will have serious airflow issues for starter. Factory problem). The thread is at:

https://bitcointalksearch.org/topic/hacking-bitmain-antminers-s7-s9-because-man-a-lot-of-these-break-2650906

C

dan1200rr

newbie

Activity: 1

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Hello, I'm working with the computer and other electronics hardware for many years - have a lot of expensive soldering and testing equpment, I can repair this boards. I'm living in EU so you can easily send it to me. My email address: [email protected]

lightfoot

legendary

Activity: 3164

Merit: 2258

I fix broken miners. And make holes in teeth :-)

Just been busy with Titan controllers (everyone's running Neptunes all of a sudden), Christmas, and Eggnog. Lots of eggnog....

fjtropepe

member

Activity: 126

Merit: 10

Quote from: taserz on December 27, 2017, 06:33:07 PM

Quote from: fjtropepe on December 27, 2017, 06:32:15 PM

I have three dead boards. Looking for someone to repair them. I PMed lightfoot but haven't heard back yet. Anyone else having any luck getting a repair job done?

Depends what is wrong?

Million dollar question. If I only knew. lol.

taserz

sr. member

Activity: 800

Merit: 294

Created AutoTune to saved the planet! ~USA

Quote from: fjtropepe on December 27, 2017, 06:32:15 PM

I have three dead boards. Looking for someone to repair them. I PMed lightfoot but haven't heard back yet. Anyone else having any luck getting a repair job done?

Depends what is wrong?

fjtropepe

member

Activity: 126

Merit: 10

I have three dead boards. Looking for someone to repair them. I PMed lightfoot but haven't heard back yet. Anyone else having any luck getting a repair job done?

Sandal_Hat

full member

Activity: 462

Merit: 118

Guys, changing ethernet cable from a right angled one to a normal one apparently brought my dead hashboard to life... Perhaps try that first?

This occurred on 2 of my miners lol, 2 hashboards total.

Dibblah

newbie

Activity: 56

Merit: 0

Interesting read for those actually doing repairs. Getting flux out is as important as getting it in - and it's quite badly constrained on this design if you don't get the board fully up to reflow through the entire via.

http://www.aat-corp.com/wp-content/uploads/2014/08/QFN-Design-Considerations-to-Improve-Cleaning-2013.docx

Topic: Antminer S9 dead hash board repair needed - page 2. (Read 5140 times)