Hi,
A friend of mine just bought two Avalon 741's along with a Raspberry Pi and PSU. They were bought from an official redistributor.
They're connected in a small "chain", as in Controller > AUC3 > Miner > Miner. They've been working for two days but today I rebooted them remotely. The miners never came back on.
The controller can't find any devices. The controller itself seems to work just fine though, settings are saved etc. It just can't find any of the miners connected.
This is what we've tried:
Cutting and restoring power to the PSU's and controller.
Changing all the cables.
Changing PSU.
Changing AUC3.
Connecting only one miner (tried both on their own).
Flashing new firmware (not Controller firmware because he doesn't have a card reader).
Restoring settings from my backup.
Light on AUC3 is green and blue, and light on both miners are green. We live in Sweden so we're using 220V.
Any ideas are appreciated! Thank you!
Edit: The CGminer API log says this:
[Firmware Version] => Avalon Firmware - 20170603
luci: ffc1d59
cgminer: 2354004
cgminer-packages: d309c69
Socket connect failed => Connection refused