Innosilicon A9 chain failure?

[emilio932]

Hey!
I recently bought a used Innosilicon A9 (50ksol) But the first chain in order is constantly crashing. It works fine for some time after reboot, but then dies again, slowly going to 0sols.
What can i test to see what is wrong?
Only used to the Antminer stuff...

Kind regards, happy for your help, emilio932

[favebook]

Contact innosilicon support. But my best guess is that you have dying hashboard.

[GarySeven]

Contact innosilicon support. But my best guess is that you have dying hashboard.

Right. It can only be a hash board or the controller. Remove one board at a time (they come out easily, unhook the wires, remove the fan and aluminum cover on the end away from the controller and slide it out) to find the bad board.

[emilio932]

The problem was that one of the fans on the miner got stuck, probably in shipping, so it could move when doing the first ramp up to test the fans, but couldnt maintain a proper speed on the back fan, when that was fixed, there were no more problems