Post
Topic
Board Hardware
Re: AntMiner S2 1TH/s Miner (1w/GH/s) Batch 4 is open for sale
by
thomashrev89
on 30/04/2014, 05:21:40 UTC
Got my two s2's today. Both where fucked up inside, Cards everywhere, bent pci slots. Plastic thingy holding the cards had about 50% survival rate.
After assembling them back together one did not start and one worked at 650Ghs. After some hours of trying different things I got two new PSU's, XFX Black Edition 1250W and RECOM 1600W(Overkill but had it laying around) One are stable at 1Ths the other is working at 920ghs with row 10 showing only lines.

I feel the s2 is a step down from s1 when it comes to build quality and overall design.
Next time pack each cards individually with bubblewrap and stick them inside the miner. Shipping the miner with the cards already in their slot is borderline retarded. 
I had the same and found that the card that wasn't registering was missing one of the tiny resistors ("0") closest to the pci connection on the board. I replaced the resistor with some pencil and some silver conductive paint and it's working fine for a week now.

Thank you for that, will try it out. Smiley You got picture so I can see? I got no education in electronics so this wil be "monkey see, monkey do"
All I have is this:
http://i.imgur.com/2Zt1Yen.jpg

It just shows which resistor it was, it's slightly blurry. I've got no education in electronics either, but I saw the corresponding resistor on another board had a "0" on it, so figured it wasn't providing much resistance and just shorted it and it worked. It would have been RMA anyway, so I figured I'd give it a go.

Be careful though, I can't take any responsibility if something goes horribly wrong...  Wink
Found this online:

Quote
Usually they are used in single layer boards for connections which cannot be routed on copper due to density. In other cases, 0 ohm resistors are used as factory switches, when the same pcb board can be equipped in several variants, and particular connections must exist in each variant. Sometimes they are used as fuses.

Suggests you just need to bridge it.

Thanks dogie, I will try the wood glue + pencil shavings.