Unplug the TV for 60 seconds, then plug it directly into a wall outlet to rule out a faulty strip or cord; inspect the power cable for damage and secure the connection. Remove the remote batteries and hold the power button a few seconds to clear stray charge, then check the sensor isn’t blocked. Disable Bravia Sync (HDMI‑CEC) in Settings → Channels & Inputs → External Inputs → Bravia Sync Settings, and turn off any timers or Eco‑Mode features. Verify that no connected HDMI device is sending auto‑power signals. If the problem persists, try a different outlet or update firmware before considering a factory reset, and the next steps will show you how.
TLDR
- Perform a 60‑second power reset: unplug the TV, wait, then plug directly into a wall outlet, bypassing power strips.
- Disable HDMI‑CEC/Bravia Sync and any auto‑power settings in the TV’s “External Inputs” menu.
- Remove remote batteries, clear the IR sensor, and test the remote’s infrared emission with a smartphone camera.
- Turn off all timers, Eco Mode, and automation rules that could trigger power‑on events.
- Update firmware on the TV and all connected devices; if the issue persists, plan a factory reset after documenting current settings.
Quick Diagnosis Checklist: Why Your Sony TV Turns On By Itself?
Often the issue stems from a simple power or remote glitch, so start with the quickest checks before diving deeper.
Unplug the TV for 60 seconds, then plug it directly into a wall outlet, bypassing strips.
Remove remote batteries and test the sensor.
Inspect the power cord for damage, make sure a secure connection, and disable any timers or Eco Mode in settings.
Test the network connection to ensure that there isn’t an external signal triggering power-on behavior via smart home integrations or firmware features.
Disable HDMI‑CEC (Bravia Sync) to Stop Unexpected Power‑Ons
Why does your Sony TV keep turning on by itself?
Turn off Bravia Sync.
Open Settings → Channels & Inputs → External Inputs → Bravia Sync Settings.
Set Bravia Sync Control to Off.
Optionally enable Device Auto Power Off and keep TV Auto Power On on.
Use Quick Settings to toggle Bravia Sync control off if you prefer.
This stops HDMI‑CEC signals from triggering power‑ons.
HDMI CEC devices can cause unintended power‑on events.
Reset the Power Supply to Fix Sony TV Turning On Unexpectedly
If your Sony TV keeps powering on by itself, a simple power‑reset often eliminates the glitch.
Turn the TV off, unplug the cord, wait sixty seconds, then plug it straight into a wall outlet—no strips.
For projection models, let the lamp cool five minutes.
Power on and test.
If the issue persists, repeat the reset or try a different outlet.
Identify and Fix Faulty Power Cords or Loose TV Connections
When a Sony TV powers on by itself, the most common culprit is a loose or damaged power cord.
Pull the cord out, inspect for cuts, frays, or kinks, and reseat it firmly.
Test a direct wall outlet, bypassing strips.
If the cord is worn, replace it with a matching model.
Check internal connections for corrosion or arcing, and repeat the 60‑second power reset before retesting.
Ensure you use a UL-certified power cord rated for 5VDC with at least 1A if you’re using any USB-powered adapters or converter setups, and verify that the connector type matches your device. UL-certified
Test Remote‑Control Interference That Triggers Random Power‑Ons
First, take the batteries out of the remote and hold the power button for a few seconds to clear any stray charge.
Next, check that nothing blocks the infrared sensor—no furniture, metal objects, or your own hand should be covering it.
Finally, reinsert fresh batteries, make sure the sensor has a clear line of sight, and test whether the TV still powers on by itself.
Be mindful of potential interference from nearby devices or power-related issues that can cause random wake-ups, such as unstable power sources or surge protections. Power Supply Issues
Remote Battery Removal
Before you start testing for remote‑control interference, remove the battery safely.
Pry open the remote with a small Phillips or flathead tool, then lift the CR2032 or CR2023 coin cell.
Note polarity—positive side faces up.
Inspect for corrosion or mis‑alignment.
Replace with a fresh 3.2 V battery, ensuring a snug fit before reassembly.
This prevents weak‑signal glitches.
Infrared Sensor Obstruction
If something blocks the IR sensor on the bottom bezel, the remote’s signal can’t reach the TV and the unit may misinterpret stray light or electrical noise as a power‑on command.
Test the sensor by pointing the remote at a smartphone camera; a blinking purple light confirms emission.
Clear dust, wipe the window, and remove objects or pets.
If the remote works on another TV, the Sony sensor is obstructed.
Unplug, wait five minutes, then retry.
Turn Off Timers, Eco‑Mode, and Hidden Power‑On Settings on Sony TV
When your Sony TV powers on by itself, the most common culprits are enabled timers, Eco‑Mode settings, or hidden power‑on options.
Open Settings via the Home button, go to Timers, and turn Sleep timer Off.
Disable any On timers, set Eco → Auto shut‑off Off, and confirm all Clock & Timers entries are disabled.
This restores full control.
Additionally, check for any ongoing device or network issues that could trigger automatic startup, and ensure the TV’s firmware is up to date to avoid unexpected power events Scheduled Maintenance.
How to Update Firmware and Safely Reset Your Sony TV
Keeping your Sony TV up to date protects it from bugs and adds new features, so updating the firmware regularly is essential.
Access Settings > System > About > System software update, confirm Wi‑Fi is on, and select “Update TV software.”
For manual installs, download the ZIP from Sony’s site, copy it to a FAT32‑formatted USB, insert it, and follow prompts.
After updating, perform a factory reset via Settings > System > About > Reset, remembering it erases all personal data.
If you experience unexpected behavior such as the TV turning on by itself after updates, you can also perform a soft reset or verify network and power settings to rule out unintended wake signals need to verify changes made and ensure the TV remains powered off when desired.
Inspect Connected HDMI Devices for Auto‑Power Signals
Disconnect every HDMI device while the TV stays plugged in.
Power it on, then check if it stays off.
Reconnect each device one by one, testing after each addition.
If a soundbar or streaming box triggers power‑on, disable BRAVIA Sync control in Settings > External Inputs > BRAVIA Sync.
Use a wall outlet instead of a surge strip to rule out intermittent signals.
Power cycle the TV and verify that auto power is not being triggered by any connected device, which can be influenced by HDMI-CEC settings.
Know When to Call Sony Support for Power‑On Issues
If the TV still powers on by itself after you’ve disabled HDMI‑CEC, turned off all timers, and performed a full power reset, it’s time to contact Sony support.
Call 6544 8600 during business hours or submit the online service form.
Explain that you’ve checked cables, removed remote batteries, and updated firmware.
Mention persistent auto‑power behavior to trigger a service request.
Prevent Random Power‑Ons With Easy Maintenance Tips
Often the simplest way to stop a Sony TV from turning on by itself is to follow a quick maintenance routine.
Unplug the TV for two minutes, then plug it directly into the wall.
Disable all sleep, idle‑off, and auto‑shut‑off timers in settings.
Turn off HDMI‑CEC/BRAVIA Sync.
Inspect the power cord and remote for damage.
Test stability before reconnecting devices.
Ensure CEC is enabled on both the TV and any connected devices to prevent unintended wake events HDMI‑CEC basics.
Maintenance Checklist to Keep Your Sony TV Stable Long‑Term
When you keep your Sony TV running smoothly, regular maintenance is essential.
Inspect the power cord and outlet for damage, test with other devices, and avoid power strips.
Disable HDMI CEC and sync auto‑power features, then update firmware on all connected gear.
Turn off timers, Eco Mode, and automation.
Remove remote batteries, clean the sensor, and test with fresh cells.
Reset power by unplugging for 60 seconds, install the latest firmware, and document settings before a factory reset.
HDMI-CEC can be a culprit for unexpected activations, so review and adjust related settings across connected devices.
And Finally
By following the checklist, you’ll pinpoint why your Sony TV powers on by itself and apply the right fix. Disable HDMI‑CEC, verify power cords, reset the supply, and eliminate remote interference. If the issue persists after these steps, contact Sony support. Regular maintenance and proper device connections will keep random power‑ons at bay, ensuring a stable viewing experience.