Faulty antminer s5 Please Read and help me!

[zeratul600]

Hi guys yesterday my antminer s5 stopped hashing, I was using it at f2pool along with other 4 machines. I had seen that the rejected rate of all the other workers was 0.2%, while my faulty antminer has a rejected rate of 3.7%.

I had done the following:
1)changing the network cable (Cable is Working perfectly)
2)Changing the psu (PSU is Working perfectly)
3) Tried to reset the machine (i cant get it to reset)

I must said that when I power up the PSU the fan on the antminer goes live, making its hideous blowing noise like all the other 4 machines.

I Can't access the machine via its web interface. the router doesn't give it an IP.

I Tried connecting directly my laptop to the machine via ethernet with wifi off,  Assigning IP 192.168.1.1 mask 255.255.255.0 Default gateway "BLANK", primary and secondary dns "BLANK" to my laptop and putting 192.168.1.199 on my browser to access. IT DIDN'T WORK

I cant use the IPREPORTER.exe it says that it isn't a valid win32 Application.

Using the advanced ip scanner (freeware http[Suspicious link removed]) it can't find the machine range 192.168.0.1 - 192.168.2.254

I Find weird that the faulty antminer cant get an IP, cant hash, however its fans turn on and work like it has always done.

The only thing that i can think of will be to use another S5 and unplug their hashing cards and connect the hashing cards from my faulty antminer to see if it is my PCB that is broken.

Please help me, im Totaly open to suggestions. I cannot lose my antminer because it still needs like another 4 months to ROI itself. HELP GUYS pleaaaase pretty pretty please.

[zeratul600]

I was thinking the same, but i wonder why it will broke while the others miners are doing just fine. Also where can i get a spare part to replace it?
Thank you so much for taking the time to read, answer and help me. You are very kind 

[NotFuzzyWarm]

Also, when using a LAN straight from machine to machine you MUST use a crossover cable. not a 'straight-thru cable.. The LAN ports to not autoconfig what is the Tx and Rx lines. A hub has same problem, using any reasonably modern LAN switch between the miner and computer takes care of the issue as would a crossover adapter..

[zeratul600]

Also, when using a LAN straight from machine to machine you MUST use a crossover cable. not a 'straight-thru cable.. The LAN ports to not autoconfig what is the Tx and Rx lines. A hub has same problem, using any reasonably modern LAN switch between the miner and computer takes care of the issue as would a crossover adapter..

Thank you so much, I haven't though of that actually, ill try to get a crossover cable or circumvent that issue somehow using a router with static ip list and nothing else connected, luckily i had written down the mac address

[dimke_yu]

You could also try to burn firmware to microsd and put it in the control pcb as internal memory knows to malfunction on some devices...

[zeratul600]

I was thinking the same, but i wonder why it will broke while the others miners are doing just fine. Also where can i get a spare part to replace it?
Thank you so much for taking the time to read, answer and help me. You are very kind 

They are beagleboard blacks if I remember correctly, I am not 100% sure they are able to just be swapped out without any modification.

http://beagleboard.org/black

http://www.amazon.com/Beagleboard-BEAGLBONE_BLACK_SELF-BeagleBone-Rev-C/dp/B00K7EEX2U/ref=sr_1_1?ie=UTF8&qid=1444072778&sr=8-1&keywords=beaglebone+black

Thank you, it kinds of tranquilize me to think that I can get a sparepart kind of fast, how ever even when the 56 $ hurts a lot, what hurts more is not having the guarantee that it will work (imagine that 60$ spent on something that wont help me + more days of  down miner) so it will be amazing if other forums members could shine us some light about this). Im still have to things left to do: using a cross over cable to  connect directly to the miner, and trying to reimaging it using a tutorial As dimke_yu  has written