Preserve the baseline first
Record the player, programme, television model and current wireless result. Keep the test near the same time and avoid starting an extra playback session on another device. The goal is one changed network path, not a collection of simultaneous differences.
Check the cable's complete route to the router, including wall sockets, switches or adapters. A lead connected to an unpowered switch or an unused wall socket does not establish an upstream wired connection merely because it fits the television.
Read the actual interface state
Use the manufacturer's supported network-information controls to identify the active interface. A link indicator and a usable IP assignment are separate clues. Some devices have platform-specific selection behaviour, so follow the exact model's instructions rather than guessing from a generic menu.
If a supported temporary Wi-Fi disconnect is needed to make the comparison unambiguous, retain the wireless credentials and recovery route first. Do not erase every saved network or factory-reset the screen just to identify an interface.
Keep the two address assignments separate
Ethernet and Wi-Fi interfaces can have different hardware identities and DHCP assignments. A router reservation for one may not apply to the other. An illustrative case is working Wi-Fi but no gateway assigned to the wired interface; that is a wired configuration question before it is a media test.
Confirm ordinary external access on the verified wired path, then replay the original item. Record start time, duration and any error. A changed interface name on a status page is not proof of sustained programme delivery.
Interpret only the verified comparison
If a confirmed wired path repeatedly works while Wi-Fi fails, investigate the local wireless path and its upstream arrangement. If both fail only on the same resource, preserve that resource-specific evidence. If Ethernet never became usable, label the attempted comparison as incomplete.
Restore the intended daily arrangement and keep non-sensitive notes. A later support message should say “wired interface confirmed active” only when it was observed. This small distinction prevents unnecessary purchases based on a cable test that never actually bypassed Wi-Fi.
Related questions
Does a link light prove internet access?
No. It shows a local link observation. Address allocation, routing, DNS and the destination still need to work.
Sources and scope
Scope notes distinguish published documentation, supplied information and editorial methods. They do not report a hands-on service test.
- Cisco: Ethernet auto-negotiation — Ethernet speed and duplex mechanisms; no model-specific claim for a customer device.
- CIRA: How the Internet Performance Test works — What the test measures; examples are not measured service performance.
