Hi,
I have a problem with my S4. I run it for about 7 days and soon after, it started to be very unstable. Hashrate would drop to 1.6 Th, after reboot it wouldn't start mining unless rebooted twice. Last night its been playing up badly so I rebooted it once, that didn't solve the problem so rebooted it again, after that my miner never came back. I had to power it off as miner wasn't responding. Since then, my miner is dead, I get LCD coming up but its blank, LED on network port is flashing, LED's on controller are on . I don't get red LED next to display so not sure what's wrong.
Any idea? Help much appreciated.

Cheers,