Direct answer
A wrong result requires checking inputs, mode, calibration and output separately; a working control path can still be configured for the wrong state. For HDMI video handshake, first connect one source directly with a certified cable at a standard resolution.
What this covers
- HDMI video handshake with this exact failure state
- Diagnosis across direct TV connection versus receiver, switch, dock and cable path
- Customer-accessible observation, settings and external components
What it does not cover
- ×A displayed manufacturer error code with a different documented meaning
- ×Live electrical, sealed-system, internal battery-cell or gas repair
- ×A claim that every model exposes identical controls
Capture the exact failure state
ReversibleWrite down the selected mode, input conditions and the exact unexpected output. Expected behavior: negotiate a stable picture and sound format after source or input changes.
Isolate the component boundary
ReversibleConnect one source directly with a certified cable at a standard resolution. Use a known reference input or manufacturer test and compare the result. Boundary to separate: direct TV connection versus receiver, switch, dock and cable path.
Correct only the proven cause
ReversibleReplace the failed cable or intermediate path and update both endpoints. Correct the setting, calibration or component proven by that comparison.
Verify and stop safely
ReversibleRepeat with the reference and a normal real-world case. Stop for a hot connector, bent socket, sparks or signal loss when the fixed port moves.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Exact questions
Common follow-ups
What should I check first when HDMI video handshake has this problem?+
Connect one source directly with a certified cable at a standard resolution.
Why not factory-reset immediately?+
The useful boundary is direct TV connection versus receiver, switch, dock and cable path. A reset can erase state without proving which side failed.
When should I stop troubleshooting?+
stop for a hot connector, bent socket, sparks or signal loss when the fixed port moves.
Answer for the exact device and software version shown above.