Xbox Series S

Problem DescriptionSymptomsSolutionSource
No power.- Use a multimeter to verify 12V is coming from the PSU connector (Top row should be all 12V, bottom row should be all GND.) If not, test with a known good PSU.

- A bad HDMI encoder IC can also cause power issues.
Source
No video.- Replace HDMI port.

- Test EMI filters.

- Replace HDMI encoder IC.

- Replace the HDMI Boost Protection IC. This IC cannot be purchased so a donor will need to be pulled and reballed. Alternatively, there is a bypass board you can purchase and manually run wires for.
Source

Good Tail Insertion Tester Reading