[WTB] Antminer s2 back plate

[jeppe]

hi,
Have bought an antminer s2 and it had a broken backplate so looking to replace it.
im in need of a 100% working backplate.
need it as fast as possible!
PM me if u have any.
thanks,
JT

[jeppe]

updated!!

[adib]

Any burnmarks on the backplane?
How does it behave?

Maybe i can help you repair it
I just dont know how they look like.

Take some high rez photos and post, ill throw my 2 cents in.

Maybe this will help. As i can see, all the backplane is doing, its routing power and signaling to the beaglebone.
https://bitcointalk.org/index.php?topic=671625.0

[jeppe]

Any burnmarks on the backplane?
How does it behave?

Maybe i can help you repair it
I just dont know how they look like.

Take some high rez photos and post, ill throw my 2 cents in.

its only one of the board slots that dose not work.
the miner was posted with the boards in place and came louse destroying the backplate thought it was the boards but its the backplate. Will post some pics

[jeppe]

thats all the damage there is

[adib]

Replace those out of shape capacitors, also resolder the non working slot.
A standard iron and some wire flux would do.

Those capacitors could be shorted, preventing the slot from working properly.

[adib]

Also look inside the slot, are there any visibly bent pins?
like here https://bitcointalk.org/index.php?topic=515448.2420
post #2424

[jeppe]

Replace those out of shape capacitors, also resolder the non working slot.
A standard iron and some wire flux would do.

Those capacitors could be shorted, preventing the slot from working properly.

alright will try that, hope it works!


that are the slots that are not working

will have a look at that too thanks!!
JT

[adib]

i suppose you did switch the boards between slots to see if the board is good.
if not, try, also do a visual inspection on the half working board im suspecting a capacitor or something got snaped off

Let me know the results

[jeppe]

i suppose you did switch the boards between slots to see if the board is good.
if not, try, also do a visual inspection on the half working board im suspecting a capacitor or something got snaped off

Let me know the results

-yes i have tried to switch the boards around resulting in 1 non working slot
-Also the capacitor for the broken slot dose not show much damage but gonna try to replace it.
-The slots do not show any damage to the pins at all.

thanks for the help! will let u know how it goes!
JT

[PatMan]

Hey jeppe,

I got one spare - PM me if you're interested 

[adib]

I should open a service center )
Its most probably the slot, (micro fractures in the solder) resulting in imperfect contact or noise in the signal.
Replacing those capacitors is a good ideea no matter what.

Resolder the contacts and replace the capacitors.
If this fails, i can only think that the blade somehow bent the contacts inwards in the slot.
or in worse case scenario it broke the contacts in the pcb(unlikely) because of repeated shocks.

Good luck. If you are in the EU or even US and are unable to repair and decide to buy the other,
 send it to me(only backplane of course), never had an antminer to play before

[jeppe]

I should open a service center )
Its most probably the slot, (micro fractures in the solder) resulting in imperfect contact or noise in the signal.
Replacing those capacitors is a good ideea no matter what.

Resolder the contacts and replace the capacitors.
If this fails, i can only think that the blade somehow bent the contacts inwards in the slot.
or in worse case scenario it broke the contacts in the pcb(unlikely) because of repeated shocks.

Good luck. If you are in the EU or even US and are unable to repair and decide to buy the other,
 send it to me(only backplane of course), never had an antminer to play before

i will give it a try and if it dose not work i can send it too u
was out trying to find a shop that was open but thanksgiving her in the us so all closed (moved to the us a few months ago). so everything is closed so will have to wait to tomorrow.

[jeppe]

still looking for one

[adib]

im guessing it didnt work

still if you get the one from PatMan, please consider sending me the broken one.
At a price of course(just not a very high one )+the beaglebone, if you take one with your new one.

[jeppe]

im guessing it didnt work

still if you get the one from PatMan, please consider sending me the broken one.
At a price of course(just not a very high one )+the beaglebone, if you take one with your new one.

hi,
I have figured out that its only a single blade that is broken.
I thought that it was the backboard as it always switched between the bade, sometimes it was number 1 that was broken sometimes number 3 etc. however figured out that it assigns each number to the board randomly and was able to pinpoint the defect blade.
I can send you the defect blade if u want? only for postage cost, however postage here is very expensive so don't think it be worth it (~25$ ) but up to u. its only one single blade itself like this one (not mine)



still looking for a blade, however looks like i have a deal!
but if anyone can sell me one for less than 0.09 BTC shipped to texas PM me!!
taking a small hit on this one as i had to put more into it as expected!!
thanks!!