Hey ccgllc, I just mistakenly installed the new 2019 firmware on my antminer S9. I am also pretty sure I blew out a hash board in doing so as well. I installed the T9+ toolkit and moved the 4 jumper to the right position. Miner still isn't booting off the SD card. I am only running 2 hashboards at enhanced lower power now. I am running 110V power from the wall on a 1850W PSU. How can I troubleshoot the hashboard and how did you boot the S9 miner from the SD card?
It doesn't "boot" from the sdhc, it resets itself. After a minute or so, both the red and green like should be blinking together. Once that happens, power down, put the jumper back, reassemble, and it should boot back to the original factory firmware.