Identify the complete connection
Write down the iPad model, connector type, adapter model and display input. Apple’s support page lists model-specific capabilities, so consult the entry that actually matches your iPad before buying a cable. A connector fitting physically does not establish the cable’s display bandwidth or the adapter’s supported modes.
For a television session, include power delivery if the viewing period is long. Check whether the selected adapter supports simultaneous charging through its designated port. Keep the original power accessories available and avoid inferring video capability from a cable that has only been used successfully for charging.
Understand what the second screen shows
After choosing the correct input on the television, inspect whether it mirrors the iPad, shows a separate app video view or exposes an extended workspace supported by the model. A video app may handle its second screen differently from the Home Screen. Describe that actual state before troubleshooting.
Use a harmless photo or ordinary supported screen to establish the basic connection, then open the authorised app. If that screen appears but a protected programme does not, the successful connection is still useful evidence. It does not prove the app permits every external-output route.
Check content and audio separately
Apple’s adapter help notes that some films, programmes and streaming apps require HDCP. Its USB-C iPad page also distinguishes HDMI audio capabilities. Consult those requirements for the actual route rather than assuming a picture automatically guarantees every surround format.
When seeking help, report whether the failure affects all external display content or only a named app and title. Include where sound is heard. Preserve the model and adapter details so support can distinguish an unsupported output combination from a source-specific restriction or a television input problem.