Hi guys, a customer brought a Sapphire Nitro+ RX580 that did not have a picture, no fan spin. I checked and see there is no voltage on the graphic card except 5v and 3.3 from PCI express. All the fuses were ok. I replaced an AND gate on the board (you can see in the picture) and after that all the voltages are present and I have a picture, but on windows can not install the driver, it identifies as RX580 but with yellow triangle mark on device manager and not working as it should. I desoldered all the phase coils and checked with the oscilloscope, all 6 phases are working. I have not tried to reflash the BIOS as it is a dual BIOS version. Any thoughts. Can the GPU be damaged even there is picture??? is it possible?
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