Repair, disassembly, and troubleshooting information for the Xbox Series S, Microsoft's newest small form factor, digital-only gaming console. The Xbox Series S was released alongside its more powerful big brother, the Xbox Series X, on November 10th, 2020.
Have you tried multiple different HDMI cables?
by Kyeler W
And can you also share a photo with us regarding the HDMI port? Then we can check as well.
Could also be caused by a broken HDMI poort or a broken HDMI retimer IC.
by koppie007