ILLUSTRATIVE EXAMPLE - NOT A CUSTOMER CASE OR A BENCH TEST
Console Troubleshooting | HDMI cable comparison

Model: Xbox Series X (example only)
Reported symptom: TV says no signal; console remains powered.
Scope: External equipment comparisons. No console disassembly.

1. Safety check: no visible cable or connector damage reported.
2. Original setup: Xbox -> cable A -> TV HDMI input 1: no signal.
3. Remove intermediary equipment: direct connection still shows no signal.
4. Controlled comparison: same console and TV input, cable B: picture appears.
5. Repeat once with cable A: no signal. Cable B again: picture appears.

Interpretation: In this invented example, the result follows cable A.
Next step: Retain a suitable working cable and confirm normal operation.
Not established: Internal HDMI port, protection circuitry or processing fault.
Unperformed: Electrical bench measurements, a second TV, internal inspection.
Stop condition: Loose/damaged port, unusual heat or other electrical hazard.

No parts price, confidence percentage, customer outcome or repair success
rate has been inferred. Real reports depend on the observations you enter.
Use https://www.consoletroubleshooting.com/ to record your actual checks.