XBox Series X No display Stays on for about a minute

Hi everyone,

I need help with this Xbox Series X, which I got to repair. The SSD is healthy, and the system seems okay. All standby voltages are present, and there are no shorts to the motherboard. I tested it with another PSU, and it’s still the same. It turns on, and the power light stays on for a minute, then shuts down. It doesn’t go into Recovery mode and cannot reset the resolution. I tested all the lines on the HDMI port, and all seem okay.