HDMI CEC issues with Chromecast with Google TV occur when your streaming device conflicts with your TV's control protocols. This causes unwanted behavior like your TV turning on unexpectedly, switching to wrong inputs, or remote controls operating the wrong device.
Quick Answer
- Go to Settings → System → HDMI-CEC on your Chromecast
- Turn off TV Power Control if your TV turns on randomly
- Turn off One-Touch Play if input switching acts up
- Power your Chromecast via wall adapter, not TV USB port
- Enable CEC on your TV (may be called Anynet+, SimpLink, or BRAVIA Sync)
Symptoms
- TV turns on or off without using the remote
- Chromecast automatically switches TV input when you don't want it to
- TV remote controls Chromecast when you're trying to control TV functions
- Remote controls stop working properly on either device
- Input source changes randomly while watching content
- Power cycling happens during streaming
Quick Checks
- Check if your Chromecast uses the wall power adapter (not TV USB)
- Verify CEC is enabled on your TV (look in System or General settings)
- Test if the issue happens with other HDMI devices connected
- Try a different HDMI port on your TV
- Check if your TV has recent firmware updates available
Step-by-Step Fix
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Access Chromecast settings by pressing the home button on your Google TV remote
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Navigate to Settings → System → HDMI-CEC
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Check Device Control toggle - ensure it's enabled for basic CEC functionality
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Disable problematic features:
- Turn off TV Power Control if your TV turns on unexpectedly
- Turn off One-Touch Play if wrong inputs get selected
- Leave other settings enabled unless they cause issues
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Enable CEC on your TV using your TV remote:
- Samsung: Settings → General → External Device Manager → Anynet+ (HDMI-CEC)
- LG: Settings → General → HDMI Settings → SimpLink (HDMI-CEC)
- Sony: Settings → Watching TV → External Inputs → BRAVIA Sync Settings
- Vizio: System → CEC Function
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Power cycle both devices - unplug for 30 seconds, reconnect
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Test functionality by using your Google TV remote to control volume and power
If CEC Issues Still Occur
Try these advanced solutions:
For Yamaha receiver conflicts: Disable HDMI Control on your Yamaha receiver or switch to infrared control instead. This is a known compatibility issue with Chromecast 4K.
For complete CEC failure: Go back to Settings → System → HDMI-CEC and verify all options are enabled. Some TVs require full CEC activation before selective disabling works.
Switch HDMI ports: Use HDMI 1 or the port labeled "eARC/ARC" if available. Some ports have better CEC implementation.
Update TV firmware: Check your TV manufacturer's website for the latest software updates. CEC compatibility improves with newer firmware versions.
Consider an HDMI CEC Adapter (paid link) if you need granular control over CEC signals between devices.
Paid link: GadgetGuiders may earn a commission at no extra cost to you.
FAQ
Why does my Chromecast need wall power for CEC to work properly? TV USB ports often don't provide stable 5V power required for reliable HDMI communication. Wall adapters deliver consistent power for CEC signal processing.
What's the difference between One-Touch Play and TV Power Control? One-Touch Play automatically switches your TV input when you start the Chromecast. TV Power Control lets the Chromecast turn your TV on/off. You can disable either independently.
Why won't my TV remote control Chromecast volume? Your TV's CEC might be disabled or incompatible. Check that your TV's CEC feature (Anynet+, SimpLink, BRAVIA Sync) is turned on and try different CEC settings combinations.
Can I use CEC with a soundbar connected? Yes, but connect devices in this order: Chromecast → Soundbar → TV. Use the TV's eARC/ARC port for the soundbar connection to maintain CEC functionality across all devices.