I have been using a tester that I bought to find out which chips are faulty from the Hashboard S9. But it turns out that the controller was damaged. The controller is from a V9 machine, I have a replacement but when I put the SD card to do the test I get no results. I would like to know if I have to do something else, Flash it?

If someone also knows how to repair the controller it would be helpful

If someone can tell me if it is possible to repair a Hashboard without the need for that tester but using another method, I would also appreciate it

If someone has knowledge of Hashboard repair and is willing to offer a course, paid or free, I'm also interested. Since I have not managed to repair a Hashboard even following the manua