Hey guys so today I received my antminer A3 in the mail. I plugged it in and when I logged into the web UI one board was hashing and the other two were not showing up. I decided to switch around the data cables and try the one extra open slot for the data cable and then the second board popped up but isn't hashing, and I still fail at getting the third board to pop up. I've restarted multiple times, and having even flashed the firmware from bitmains website just in case. What should I do so I can get this figured out?

Nothing is even showing up in my kernel log.

Alright so recently I ordered two antminer S7's. One of them works totally fine at the projected 4.73 TH. On the other hand, This other S7 got to full hashrate and quickly drops. The issue I'm seeing is that the one of the boards falls to start and hash and sometimes makes another board go with it on not hashing. There is still all o's across the asic status but the board never goes above 16 on the temp. I'm not sure what this is considering that there is no x's over the chips and none are missing. Firmware is up to date.

Here is a link to a picture of what it looks like https://imgur.com/a/3hCoE

Hoping to resolve this soon. Thanks!

Is there anyway that I could mine zencash and ethereum at the same time with the ethereum dual miner? I see you can do it with multiple other coins but I search around and test with no success to figuring this out. If there is anyone out there that can help that would be greatly appreciated! 

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?