Inspect the remaining return controls
With the simplified route, check the documented Anynet+ setting and audio output choices for the model. Samsung also recommends Auto for Digital Output Audio Format when the connected equipment supports a limited format set.
If sound returns, add the removed devices one at a time and repeat the same check. The useful evidence is which change affects the outcome, not how many settings were reset.
Keep the conclusion proportional
A successful simplified route narrows the investigation. It does not certify the removed device as faulty or prove every soundtrack format will work. Review the exact equipment specifications and command relationships next.
Provide support with the normal topology and the comparison that changed the result. This retains the manufacturer’s documented diagnostic purpose without turning it into a blanket cable-replacement recommendation.
Questions answered
Does removing a box and restoring sound prove that box is broken?
No. It identifies an interaction to investigate.
Why compare Auto audio output?
Samsung documents it for equipment with limited supported audio formats in this troubleshooting context.
Sources & further reading
Official references for the subjects discussed. Service terms and device software can change.