Topic: Avalon ASIC users thread - page 82. (Read 438596 times)

Would i remove the power from the pci ribbons at the fpga or at the chips? Do I need to change the miner count for running one module? I cycled threw and unpluged the power from all but one and then pluged in one at a time and rebooting the avalon to no avail.

Thanks in advance.

It was set to 325 mhz and oc'd using --avalon-auto

It's a b3 with ckolivas's 20130821 firmware and for options "--real-quiet --avalon-auto --avalon-fan 100 --avalon-freq 325-370 --avalon-cutoff 90 --avalon-temp 70"

Previously it would get up to the high 340's, sometimes hover around 350/351.  I never did any forced or "crazy" oc'ing, just used avalon-auto.

Last week it was stuck at 325 most of the time, and put up the expected hash rate (measured at the pool).

I got in today and found the red light on, fans not spinning, toggled the power switch, and got a loud pop and the burnt smell, I immediately shut it off and started pulling it apart.  The PSU is good, per the two testers I tried on it.

I have my a/c feeding four b3's 24/7 and the other three are doing well (no slowdown or other signs of trouble) all with temp2 in the mid 60's.

I disconnected the bad module and have the remaining three running now.  I tried changing the miner count from 32 down to 24, but that made it run like only two modules were installed.  I put it back to 32 and it's doing about 78 GH/s @325 Mhz.  Also interesting is that avalon-auto doesn't seem to be kicking in.  It's been stuck at 325 Mhz for almost half an hour now (since my last restart), just like last week.  I tried setting avalon-freq to 330-370 just to get it to move and it won't.

Could this be due to a bad flash?  I haven't seen anyone else report that problem.

What frequency were you running?

This just happened to me too.   

On mine it's clearly the chip near the center of a miner with a big + sign and "680 e31" - it looks and smells burnt

In my unit two modules are connected and two are not.  The problem is on one of the connected modules, though it looks like I could separate it fairly easily.

Still searching... is there a warranty or some way to get this fixed?

Yes both, data and power connector from all modules, and start connecting one by one.

With the orginal PSU the fans spin, wr703n functions fine but we still have a yellow/green leds.

When you talk about removing a module to you mean removing the power chord attached to the module, removing the pci data ribbon or both?

You can remove only broken submodule. Each module usually contains 8 mini modules (PCBs) with 10 chips. I see only on low quality  photo batch 3 module. They have 2x40 chip PCB, but I'm not sure.
I test Avalon with only one chip and works fine So in my opinion You can work with any quantity PCB. I am happy to buy the defective unit without heat sink - depends on the price.

 

As well I understood Avalon works without problems with original PSU  ?
If not remove all modules and try run with  one. Than check next one.

Ive been having similar issues, when using http://ocz.com/consumer/psu/zx-series-850w-1250w-power-supply ZX Series 850W-1250W - Power Supply
I get red and yellow leds and the fans dont spin.

When placing the original power supply back in fans spin and I get yellow and green leds.

Ive checked all connections to make sure nothings unplugged, reflashed the wr703n, unsuccessfully tried replacing the power supply(red and yellow led), copied every setting from a functioning avalons luci/cgminer settings.

I've posted the system, kernal and cgminer error logs here.
https://bitcointalksearch.org/topic/m.3089903

Any help would be greatly appreciated, Thanks in advance.
6ray

any reading material on setting avalon units to solo mine on windows?

do so.. put up an auction..

I need to consult with my mining consortium before I can give a price. Perhaps I will make an auction thread. Anyways.. I'll let you guys know soon. 

Interested.

id have it too.. price?

I want it.

BTW-

Has anyone tried taking Avalon batch 3 modules apart? In the four module version, they combined modules 1 & 2 and 3 & 4. I'm not sure if there is an easy way to separate them into individual modules.

If anyone wants a fried batch 3 module let me know, maybe you could fix it. I am not sure what fried on it, but I saw sparks flying so it can't be good.

Definitely could of been worse. I'm just happy to have it back at 3/4ths the speed!

I am certain it is the module, after messing around with it for a while I started to smell that infamous burning electronics smell. To further prove it's the module, I saw it spark up pretty good upon flipping the switch on... scared the crap out of me lol.

Cheers creativex  

I had a b3 4 module unit with teh same symptoms once. I was never sure exactly what cured it, but I swapped to another identical PSU and that didn't do it so I tried two smaller PSUs(2*650) each feeding one CPU header and one PCIe header. I used the paperclip short to turn on the second PSU and it worked. Weird thing is, later I swapped it back to the original PSU and it still worked.

Not much to go on, but hope it helps.

Edit: Nice. - a few hashes, but it could've been worse right?

Actually, upon further review... it seems we blew out a module. After disconnecting this busted module, the other three modules are running fine.

Bounty goes to me.

1 BTC to whomever can help me solve this.

When the Avalon is turned on, immediately the red light comes on & it won't hash. The fans aren't spinning either.  

I can connect to it through the web interface.

I tried:
Replacing the PSU... nothing
Flashing to ckolivas' newest firmware... nothing

Any ideas? This seems hardware related rather than software related, but I'm at a loss as to what to try..

I'm thinking possibly it is the Avalon PDU (because the fans don't spin up when it is turned on), or the TP-LINK WR703N. However, that is just me speculating.