Hi there. Help needed. Yesterday I found out via F2Pool that the miner was offline. I went to check it and observed that there were no blinking lights (normal or fault). The miner was on but I couldn’t log on via web to check for errors. Fans are ok. Not sure what to do. My guess is the control board is toasted. If so it is just a simple replacement or do you have to do something else to the new board. Thanks in advance and waiting for your comments.
Are you getting any lights at all? There should be smaller power on leds. should be a simple replacement if that its completely dead.
if you have some lights you could try to reflash the firmware and/or run the firmware from an SD card. I’ve seen where control board, for what ever reason, either wont flash or won’t read from it’s local memory, basically fails to boot. But if you boot it from SD it works just fine.
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Hi. Both lights (normal and fault) turn on at the same time for just a sec right at the moment the power is on. It lasts a second then no lights whatsoever. How do you flash the firmware from the sd card? Any manual available online? Thanks for your help.
Hi, which control board are you using for the S19J Pro? Integrated or combined control board? You can find some repair guides for the Antminer control board here.
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Thanks for the info. Will check it out.
doing the lords work with these docs 
Thank you!
Hi guys. New control board installed and everything back to normal again. Thanks for all your comments.
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