I have the same problem with only 3 of the 4 boards working properly... Is this something fixable or must it be sent back to Bitmain? Just obviously concerned about the cost to send the miner back, the loss in earnings as well as probably having to re-pay customs to get it back!

Any help appreciated.

Pic attached on Twitter (tried to reach out to Bitmain) - https://twitter.com/daveharwood4/status/903229426019786752