Alright, who knows Gridseed circuit boards better than anyone else?

[VMey]

I got myself into a polarity snafu. Not entirely sure how, though I'm guessing what appeared to be a PCI-e was actually a CPU input, which I believe crossover. Or the yellow was actually the negative and the black the positive. It is what it is.

My Gridseed popped when I plugged it in. I dismantled it, and saw one of the fan wires had blown off, so I soldered it back on and the fan runs fine now.

However, I don't know whether further irreparable damage has been done. I don't have my horde of USB cables in yet nor have I configured my Raspberry Pi yet so I can't test the miner just yet.  But I have a picture and I'm hoping someone can take a stab at where I stand.

http://i57.tinypic.com/2u619hz.jpg

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[crazyates]

Well, if you don't want to throw it away, at least you have a nice shiney paperweight. 

[tk1337]

definitely a capacitor, might have some surrounding damage, doubtful though...

I've got two gridseed's coming in for repair right now, contact me if you're looking to get this repaired. (Probably would only be cost-efficient if you're within the US).

[mixdio]

Those are ferrite beads FB23 & FB24, not capacitors.

Ferrite beads are ideally zero resistance for DC - if nothing else appears damaged, you could try replacing them with a piece of wire.

Clean the board with a stiff brush and 99% isopropyl alcohol.

[tk1337]

Those are ferrite beads FB23 & FB24, not capacitors.

Ferrite beads are ideally zero resistance for DC - if nothing else appears damaged, you could try replacing them with a piece of wire.

Clean the board with a stiff brush and 99% isopropyl alcohol.

hmm, yea, you're correct, I can see the faint 'FB' marking under the burn mark in the picture... hard to tell without having one in front of me.