Symptoms
- Input changes without anyone pressing anything
- Happens when turning a TV, game console, or streaming device on/off
- Switches to a device that isn't even in use
- Started after adding a new HDMI-connected device
Likely causes
- CommonHDMI-CEC auto-switching from a connected deviceCEC lets devices like a game console or Blu-ray player request to become the active input when they power on.
- CommonUniversal remote or smart hub sending unintended commandsA macro or scene in a smart remote setup may include an input-change step.
- PossibleIR interference from another remote or deviceAnother IR remote in the room may share overlapping codes with the receiver.
- PossibleReceiver's auto-input-detection featureSome receivers auto-switch to whichever HDMI input just detected a signal.
What to do
- Identify which device's power-on/off correlates with the unwanted switch.
- Turn off HDMI-CEC on that specific device (menu names vary: Bravia Sync, Anynet+, SimpLink, Consumer Electronics Control).
- Turn off HDMI-CEC on the receiver itself if the issue continues, to fully stop cross-device signaling.
- Check any universal remote's activities/macros for an unintended input-switch step and edit or remove it.
- Turn off any 'auto input detect' or 'last input memory' setting in the receiver's menu.
- Test one device change at a time after each setting adjustment to confirm which fix worked.
When to call a pro
Not typically needed; this is a settings issue almost always solvable by adjusting CEC and remote configuration.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.