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Topic: The Chili – 30+GH/s BFL based Bitcoin Miner Assembly - page 22. (Read 138054 times)

sr. member
Activity: 361
Merit: 250
Bought 2 boards, one works great 34 ghz, but the other board only has LED's 1-4 come on and is unrecognized by cgminer. PM sent with details.

Thank you MR Teal in advance for your assistance.
member
Activity: 86
Merit: 10
The hot air would have been preferable but I have removed plenty of chips this way before so there wasn't much to worry about. The biggest challenge was the large ground plane and my crappy home soldering iron. If I had taken it to work to use the equipment there it would have been much easier but I am on vacation.
member
Activity: 86
Merit: 10
i may just try and replace the ftdi chip
Before doing that, try shorting the center two pins on the unpopulated 0.1" connector labeled PROG. Pin 5 is MCU reset and pin 6 is ground, so it will hold the microcontroller in reset. If it's an MCU issue holding it in reset should cause the device to pop up on your computer as the FTDI chip will be able to connect. If it doesn't show up, it likely is the FTDI.
replacing the FTDI chip fixed it!!!!!!!!
 Grin
You rock. I've replaced a few of those on the BFL devices; bitch in heat.
How did you do it on the Chili? And what is with those chips?
C
It's the first one on a Chili I've heard of failing, but they're actually not that hard to remove. Just heat it with air and pull it off.
I used an X-acto blade to cut the legs off then cleaned the pads off with solder wick and replaced the chip. no hot air gun available.
sr. member
Activity: 378
Merit: 250
Just received a Chili today and within minutes of it starting to hash it starts reporting that it is receiving an empty string from the temp sensor and the last Diag LED goes on, its in a 40 degree F room with three fans on it and heat sinks.

Any ideas?

Can I get an RMA?

Just one LED is on, and it just stays on? Was this one you got second hand from someone?
PM the serial number and any other details on the symptoms if you can.

Yes just the one LED stays on
I sent you details and serial number in PM

I'm sure this is the miner I just sold joeventura.  This is a new symptom.  All of my Chilis have performed w/o issue.

I've offered to fully refund joeventura if he is unable to get it working.

I just want to be clear that this is not a case of me dishing off a problem miner.

I am not saying you are doing any such thing.
I have no doubt you are an honorable member of the community.
I have no worries that if I ask for a refund I will get one.





Rats.  I was worried that might be misinterpreted.  I know you don't think that, joeventura.  Wink 

I just wanted to make sure MrTeal and any third party observers didn't get that impression.   
hero member
Activity: 854
Merit: 500
Just received a Chili today and within minutes of it starting to hash it starts reporting that it is receiving an empty string from the temp sensor and the last Diag LED goes on, its in a 40 degree F room with three fans on it and heat sinks.

Any ideas?

Can I get an RMA?

Just one LED is on, and it just stays on? Was this one you got second hand from someone?
PM the serial number and any other details on the symptoms if you can.

Yes just the one LED stays on
I sent you details and serial number in PM

I'm sure this is the miner I just sold joeventura.  This is a new symptom.  All of my Chilis have performed w/o issue.

I've offered to fully refund joeventura if he is unable to get it working.

I just want to be clear that this is not a case of me dishing off a problem miner.

I am not saying you are doing any such thing.
I have no doubt you are an honorable member of the community.
I have no worries that if I ask for a refund I will get one.



sr. member
Activity: 378
Merit: 250
Just received a Chili today and within minutes of it starting to hash it starts reporting that it is receiving an empty string from the temp sensor and the last Diag LED goes on, its in a 40 degree F room with three fans on it and heat sinks.

Any ideas?

Can I get an RMA?

Just one LED is on, and it just stays on? Was this one you got second hand from someone?
PM the serial number and any other details on the symptoms if you can.

Yes just the one LED stays on
I sent you details and serial number in PM

I'm sure this is the miner I just sold joeventura.  This is a new symptom.  All of my Chilis have performed w/o issue.

I've offered to fully refund joeventura if he is unable to get it working.

I just want to be clear that this is not a case of me dishing off a problem miner.
hero member
Activity: 854
Merit: 500
Just received a Chili today and within minutes of it starting to hash it starts reporting that it is receiving an empty string from the temp sensor and the last Diag LED goes on, its in a 40 degree F room with three fans on it and heat sinks.

Any ideas?

Can I get an RMA?

Just one LED is on, and it just stays on? Was this one you got second hand from someone?
PM the serial number and any other details on the symptoms if you can.

Yes just the one LED stays on
I sent you details and serial number in PM
donator
Activity: 686
Merit: 519
It's for the children!
Shameless plug?  I'm selling my chilis.
newbie
Activity: 29
Merit: 0
My chilis in garage are not working if cold. Yesterday they stopped at 3 am and today same. I rebooted everything and LEDs are blinking well, but my raspberry pi doesn't recognize the devices. They may be gonna recovered Morning as the yesterday case. How are your chilis? Are they okay in -7 Celsius degree?

I found the reason. U25 temperature sensor doesn't work properly under low temperature. I covered it with a small tape and now all chilis are okay.
Out of curiosity, how did you verify that the temperature sensor wasn't working correctly? It is specced to work linearly down to -40C, but I haven't actually tested that.
Before covering U25, chilis stop soon, but now all fine after covering U25 with a thick tape. Blowing directly to U25 in this freezing cold weather (-7 Celsius degree) might be the reason. Let me check more and will report again.
legendary
Activity: 1274
Merit: 1004
i may just try and replace the ftdi chip
Before doing that, try shorting the center two pins on the unpopulated 0.1" connector labeled PROG. Pin 5 is MCU reset and pin 6 is ground, so it will hold the microcontroller in reset. If it's an MCU issue holding it in reset should cause the device to pop up on your computer as the FTDI chip will be able to connect. If it doesn't show up, it likely is the FTDI.
replacing the FTDI chip fixed it!!!!!!!!
 Grin
You rock. I've replaced a few of those on the BFL devices; bitch in heat.

How did you do it on the Chili? And what is with those chips?

C
It's the first one on a Chili I've heard of failing, but they're actually not that hard to remove. Just heat it with air and pull it off.
legendary
Activity: 3220
Merit: 2334
I fix broken miners. And make holes in teeth :-)
i may just try and replace the ftdi chip
Before doing that, try shorting the center two pins on the unpopulated 0.1" connector labeled PROG. Pin 5 is MCU reset and pin 6 is ground, so it will hold the microcontroller in reset. If it's an MCU issue holding it in reset should cause the device to pop up on your computer as the FTDI chip will be able to connect. If it doesn't show up, it likely is the FTDI.
replacing the FTDI chip fixed it!!!!!!!!
 Grin
You rock. I've replaced a few of those on the BFL devices; bitch in heat.

How did you do it on the Chili? And what is with those chips?

C
hero member
Activity: 854
Merit: 500
Just received a Chili today and within minutes of it starting to hash it starts reporting that it is receiving an empty string from the temp sensor and the last Diag LED goes on, its in a 40 degree F room with three fans on it and heat sinks.

Any ideas?

Can I get an RMA?

Just one LED is on, and it just stays on? Was this one you got second hand from someone?
PM the serial number and any other details on the symptoms if you can.

Yes second hand.

Made a few changes, hopefully it will stabilize
legendary
Activity: 1274
Merit: 1004
My chilis in garage are not working if cold. Yesterday they stopped at 3 am and today same. I rebooted everything and LEDs are blinking well, but my raspberry pi doesn't recognize the devices. They may be gonna recovered Morning as the yesterday case. How are your chilis? Are they okay in -7 Celsius degree?

I found the reason. U25 temperature sensor doesn't work properly under low temperature. I covered it with a small tape and now all chilis are okay.
Out of curiosity, how did you verify that the temperature sensor wasn't working correctly? It is specced to work linearly down to -40C, but I haven't actually tested that.
member
Activity: 86
Merit: 10
i may just try and replace the ftdi chip
Before doing that, try shorting the center two pins on the unpopulated 0.1" connector labeled PROG. Pin 5 is MCU reset and pin 6 is ground, so it will hold the microcontroller in reset. If it's an MCU issue holding it in reset should cause the device to pop up on your computer as the FTDI chip will be able to connect. If it doesn't show up, it likely is the FTDI.
replacing the FTDI chip fixed it!!!!!!!!
 Grin
legendary
Activity: 1274
Merit: 1004
Just received a Chili today and within minutes of it starting to hash it starts reporting that it is receiving an empty string from the temp sensor and the last Diag LED goes on, its in a 40 degree F room with three fans on it and heat sinks.

Any ideas?

Can I get an RMA?

Just one LED is on, and it just stays on? Was this one you got second hand from someone?
PM the serial number and any other details on the symptoms if you can.
full member
Activity: 241
Merit: 101
Hi there, I have several chili's, One of the new ones I just received is having issues. When its first plugged in the LED's 5,6,7,8 come on and stay on and never go off.

Any suggestions? Thanks in Advance!~
hero member
Activity: 854
Merit: 500
Just received a Chili today and within minutes of it starting to hash it starts reporting that it is receiving an empty string from the temp sensor and the last Diag LED goes on, its in a 40 degree F room with three fans on it and heat sinks.

Any ideas?

Can I get an RMA?

legendary
Activity: 3220
Merit: 2334
I fix broken miners. And make holes in teeth :-)
Still hashing this morning at 39+Gh, peaking at 40gh, but the third statistic in BFGMiner is still about 2gh less (the one that is shares submitted to pool and accepted). Still not quite sure why, the rejected shares is <1% and errors are at a solid 5.5%.

Have heat sinks coming for the FETs, yes they are hot even with a fan on them. But man this $49 water cooling thing from newEgg is incredible. I have a dead jalapeno board coming in without chips so I can use that to see how/if I can fit water cooling on my J units. Well worth it.

C

6% of 40Gh is 2.4Gh  so    40/40/38  is quite respectable.

I wonder if that's it: The normal BFL chips don't take so much of a hit on an error because they all run all over the place. The Chili runs itself in lock-step, so when it has an error it's a total fail on all chips and not just the one chattering.

Which brings up a point: Is the error due to a heat issue? It's amazingly constant, maybe the microcode runs things fast enough to have that many errors or something.

But yes, 38 is pretty darn good. Might just enjoy that.
hero member
Activity: 868
Merit: 1000
Still hashing this morning at 39+Gh, peaking at 40gh, but the third statistic in BFGMiner is still about 2gh less (the one that is shares submitted to pool and accepted). Still not quite sure why, the rejected shares is <1% and errors are at a solid 5.5%.

Have heat sinks coming for the FETs, yes they are hot even with a fan on them. But man this $49 water cooling thing from newEgg is incredible. I have a dead jalapeno board coming in without chips so I can use that to see how/if I can fit water cooling on my J units. Well worth it.

C

6% of 40Gh is 2.4Gh  so    40/40/38  is quite respectable.
newbie
Activity: 29
Merit: 0
My chilis in garage are not working if cold. Yesterday they stopped at 3 am and today same. I rebooted everything and LEDs are blinking well, but my raspberry pi doesn't recognize the devices. They may be gonna recovered Morning as the yesterday case. How are your chilis? Are they okay in -7 Celsius degree?

I found the reason. U25 temperature sensor doesn't work properly under low temperature. I covered it with a small tape and now all chilis are okay.
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