So I have a friend that has offered to sell me his broken antminer S7. He told me that one board has 54 chips and the other two have 45 chips. All three boards show up but only one hashes out of the three. He also said sometimes it doesn't hash until you reboot it. Could it be a bad control board? Is this fixable?
http://i.ebayimg.com/images/g/nx0AAOSw~gxZrek7/s-l1600.jpg
http://i.ebayimg.com/images/g/M5IAAOSwv~NZrek7/s-l1600.jpg
http://i.ebayimg.com/images/g/nx0AAOSw~gxZrek7/s-l1600.jpg
http://i.ebayimg.com/images/g/M5IAAOSwv~NZrek7/s-l1600.jpg
Yeah, I'm the guy who is selling this.
Not sure what is wrong with it buddy, but I can answer any questions if you have them.
The 54 chip board is from an older batch miner, the two younger boards are from a newer miner. I don't know enough about it to fix it, but someone said it was the control board