Topic: Hacking KNC Titan / Jupiter / Neptune miners back to life. Why not? - page 23. (Read 76793 times)

Analyzing start-up log... sed: /var/log/initc.log: No such file or directory error code =
grep: /var/log/initc.log: No such file or directory Starting ASIC boards test...
InitA started in ASIC TEST MODE
BBB S/N: A335BNLT0A604013910873
LM75 OK. Temperature = 28.5°C
TPS65217 OK. Modification A, revision 1.1
Testing ASIC board #0... No board found
Testing ASIC board #1... No board found
Testing ASIC board #2... No board found
Testing ASIC board #3... error code = -12
Testing ASIC board #4... error code = -12
Testing ASIC board #5... error code = -12
Restarting mining...


What is this error?, Dies shows up,, cuve nr 4 and 5, hashes like normal.cube 3 dont hash.

what can it be?

Factory maybe? Didn't seem too bad actually, as I said I'll try pulling the low order chips this week and see what's up. It is different though.

In the meantime got TXSteve's board in, very different failure.

When you plug it into the controller board the board boots and runs, but can't communicate with any of the cubes on the control spi connection. The cube doesn't short out the FPGA, what I am wondering is if the problem is in the LM75 or EEProm chips. Reason being with power off the SPIs to the power supplies are off (so that isn't it) and the only thing alive is the LM75 and Eeprom.

I'll try pulling those chips this week and see if it still shorts out the SPI bus. Weird.

Hm. Try removing the LCD display and see what happens. Maybe it's shorting out the SPI bus.

If not the controller board probably has a shot fpga. Can KNC repair it under warranty? Edit: Yes, I think shorted FPGA if nothing else is connected and it reboots without the LCD.

C

1) Are you running the latest 2.00 Titan code from KNC? If not run it.

YES, version is 2.0 titan code from knc

2) What does the light on the controller board do? It should flash white for a few seconds, then go off, then turn on green if you are running 2.00 code. If it flashes white quickly, then turns off then flashes white again the controller has a shorted FPGA. If no lights at all the FPGA and TMS chips may be bad.

The gold standard test is to ssh into the titan controller with username pi password whatevertheadminpasswordis, then type

io-pwr init

And watch the light. If it comes on green and there are no errors in your ssh session you're good. If you get errors, post them.


After io-pwr init , the light is turn green+red, look like yellow for 30 seconds  and  cgminer say-----   TPS65217 ok. Modificitarion A, Revision 1.2------the system is going down for reboot now! (console)

And the board reset, and big  led is green  and three small led green,but in lcd display say kncminer spimux and not recognized none cubes, and restar every five minutes

Ok. Questions:

1) Are you running the latest 2.00 Titan code from KNC? If not run it.
2) What does the light on the controller board do? It should flash white for a few seconds, then go off, then turn on green if you are running 2.00 code. If it flashes white quickly, then turns off then flashes white again the controller has a shorted FPGA. If no lights at all the FPGA and TMS chips may be bad.

The gold standard test is to ssh into the titan controller with username pi password whatevertheadminpasswordis, then type

io-pwr init

And watch the light. If it comes on green and there are no errors in your ssh session you're good. If you get errors, post them.

C

hello steve, i tried disconnect all cubes, but the board present same error, in the lcd display kncspimux, i tried reflash and present same error, i tried downgrade and present same error,
the error in cgminer  say, devices not found,  whith one cube or two otr three or for connected same error, look like the board is broken in any place or anything else.

please any one help me with this problem in my kncminer titan, read from the bottom


 emailr from kncminer

I have done all the steps that you have marked me , and continues to give the same ruling, the screen always remains in spimux and even lets the web interface does not recognize any cube, and every 5 minutes the raspberry pi restarts , I checked all you have recommended me some other advice?


Enviado desde Outlook


De: Anna (kncminer) <[email protected]>
Enviado: miércoles, 11 de mayo de 2016 12:59

Asunto: [kncminer] Re: please help me
 
##- Please type your reply above this line -##
Your request (44769) has been solved. To reopen this request, reply to this email.

Anna (kncminer)
May 11, 14:59

Hi,

Please try following:
Please could you make sure you have the latest firmware installed, then go to the system page of the web interface and click on the reset button to reset the system configuration. This will completely wipe all configuration data and re-write it. You will need to enter an admin user account and password again on first boot up after the reset, as well as your pool details.

Once the pool details have been entered and saved, click on restart miner and the miner should then detect all cubes correctly and begin hashing.

Let me know if you have any further issues.

Best regards  |
Med vänlig hälsning

Anna

Kncminer
www.kncminer.com
Office: +46 8559 253 20


Apr 22, 14:32

the network is fine, let me THROUGH access the web and pi miner, but not detect cubes, i tried several times reformat sd an switch the router switch psu, switch cable data and anything function, the pi miner is fine, always lcd say kncminer spimux and the cgminer no devices found, i tried with one cube, 2 cubes, 3 cubes, 0 cubes and nothing, other solution?
Thanks and regards

Attachment(s)
Captura de pantalla 2016-04-22 14.27.45.png
Captura de pantalla 2016-04-22 14.28.00.png
Anna (kncminer)
Apr 21, 15:09

Hello,

Apologies for delayed reply.
There might be some problem with network. Try to connect it to another switch/router.
Also clear cache in your browser and do force restart with Fn+F5

Best regards  |
Med vänlig hälsning

Anna

Kncminer
www.kncminer.com
Office: +46 8559 253 20


Mar 12, 15:37

Good morning , my titan remains on the screen that puts kncminer spimux , let me THROUGH access the web , I trying to make a recovery and after making has the same fault , I changed the version to other older and does not work, that I can do , I tried disconnected all cubes and nothing on the web does not allow me to access the advanced settings nor any connected cube appears although they are working, not mine , I can do

]

got it working, found the other image. ty

Yeah, already tried, IN SSH it refuses permission as DEV.
also tried the  http://ssh.vyper.kafit.se/wp/wp-content/uploads/knc.gz . This is a 1gb Image for 0.96-1 downgrade.

Worked one some BBB, others it just dont work.

http://www.kncminer.com/support/neptune-setup-and-firmware

Could anyoone, Make Adump of a Full KNC image to flash BBB, i found a 4gb once , cant find it anymore.

Preferable 1.01 or 1.6 but i need a full image dump , if anyone could help me thanks .

If it's over a k of resistance that means you send the board in :-) Interesting. Tell me about the whole process. Like:

You wake up
You eat cereal for breakfast, it takes like wood shavings
You plug the bad cube into a power supply
You turn on the supply
You turn off the supply
You plug it into the Titan controller
You turn on the supply
You realize you forgot to plug the titan controller into the power supply
You feel stupid
You get therapy
You feel better....

That sort of thing.

no they aren't shorted to ground, they both have resistance -- what's that mean?

It could work, can you tell if the pin 4,6 on the 10 pin connectors are shorted to ground?

C

I used a dewalt heat gun to reflow hundreds of cointerra boards back to life, its worth a shot.

I could, however I can guess what's wrong with it: When the chips get too hot from running too fast with a bad heatsink connection the solder under the dies inside the chips starts to heat up. Reason is the heat starts going down INTO the board instead of up and out via the tower heatsink.

As a result (and since the connection to the board is through a interconnecting junction at the bottom of the chip) that solder gets hot. When it gets hot enough to melt it extrudes solder balls around the die and kills the die. Sometimes it just takes out the .8v supply lines (most of the bga pins are this) however sometimes it hits either the die control lines or (way worse) the die power lines to the hotel circuits on the die.

That line is powered by the FPGA board's TMS chip because KNC was (efficient, cheap, something) and didn't put in a small dc-dc charge pump. However since it is shared by all dies a short will basically kill the cube and short the line to all of the other cubes through the 10 pin. Result=sucks.

The other way this blows up is if the cube has a bad power plug from running too hard with only one supply. If the gound lifts before the +12, the cube will try to draw power from the ground line on the 10 pin, then will try to draw ground *through* the signal lines and the hotel power supply (because 1.8v is closer to ground than 12v is). This blows out the chip, the controller (sometimes) and makes a large mess.

C

Hmmm...did not someone on this thread or the swedish thread say the raspberry pi can start to go and do this? I"m not sure. But swap the pi out with another raspberry pi
B+ 512mb would be a quick test imho

again you probably have already done this

In my case the chip would still be hot, even when the cubes were unplugged. Incidentally I had a junk Neptune that belonged to a friend of mine, if you connect the ribbon cable BACKWARDS on the cube but correct on the board, as he did, (its not keyed on the cubes) it will then begin the yellow flash thing, but not only that, the chip would roast even when cubes were disconnected. At this point, it won't see the cubes. The yellow flash thing is either a warning from the LED, or the white LED being overdriven to a point where its yellow?

Yeah it is a LOT of work being a Tech Mage....busy busy Everyone is in AWE of your massive Tech Powers (that look like Magic) but no 'you' time