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Title: Alright, who knows Gridseed circuit boards better than anyone else? Post by: VMey on March 28, 2014, 07:30:36 AM 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 Title: Re: Alright, who knows Gridseed circuit boards better than anyone else? Post by: crazyates on March 28, 2014, 01:24:52 PM Well, if you don't want to throw it away, at least you have a nice shiney paperweight. ;)
Title: Re: Alright, who knows Gridseed circuit boards better than anyone else? Post by: tk1337 on March 28, 2014, 06:02:19 PM 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). Title: Re: Alright, who knows Gridseed circuit boards better than anyone else? Post by: mixdio on March 29, 2014, 03:06:37 AM 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. Title: Re: Alright, who knows Gridseed circuit boards better than anyone else? Post by: tk1337 on March 30, 2014, 05:10:21 AM 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. |
