I have just tried with another controller, but it's not turning on, I have tried connected several hashing board to different working s7 controller but it's not turning on nor hashing, even when I change the position of the plug or put the 18 pin plug to another empty pin while it's same working machines board but the hashing board doesn't start, any help please
Do not you have a screwdriver ?
you can take the S7 controller from working miner and replace it iwith the non-working miner controller.
So you can find out, it is the controller fault or not .
As I understand, you already did it.If with the other controller miner does not go to work, it is hasboard(s) fault.
I will try this option now by removing one controller from one machin to check with the one which is not working