Hey Fusion,
The boards had X'd out and then upon reboot, would simply not show. For example, one of my S9's will only hash with 2 boards instead of 3 and the hashrate is around 8.6th. I've sent some boards back to Bitmain already (under warranty), but given the wait time and high international shipping costs, I was looking to fix it myself. I'm familiar with the troubleshooting process, but wanted to know about actually fixing a board.
Thanks,
MM
Gotcha, well i've never done that, dont plan to, so i cant be of much help. From what i understand, IF they can, they'll re-attach heatsinks and remove\resolder chips. Thats about all that i know, best of luck to you!