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Verify that the unit is plugged into a fully working outlet. Press the power button on the unit to verify it is not a remote control issue. If it's the remote:

Pressing the remote control toward the TV should cause an LED or light on the TV front panel to flash. This indicates a code was transmitted. Verify the remote control is in TV mode. If the front panel lamp or LED does not flash verify the batteries are installed properly and in good condition. Battery corrosion can cause the remote control to not function. The remote control range is 30 feet or less. A bright light behind the remote control can affect the performance of the remote control. A remote control can be tested by pointing it at a digital camera or camera phone; the transmitter will show white on the camera screen if it is transmitting.

Otherwise:

• Perhaps an on/off timer or sleep timer is set.
• Or remove the electrical plug from the wall outlet and wait a while before inserting it into the wall outlet again.

If the problem persists or if you require further explanation, you'll have to consult Sony; use the contact information at https://www.contacthelp.com/sony/customer-service.

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Bad power supply, button, power board, or inverter

If you have a desktop computer and plan ontrying to repair it yourself, open the computerand verify the power connections. You can do so by disconnecting the main power cable and reconnecting it to make sure it has not become loose.

https://www.sony.com/electronics/support/product/kdl-46ex701/manuals

If your TV turns on or off at regular intervals, such as 30 minutes to an hour, it's likely caused by power saving functions such as Idle TV Standby, On Timer, and Sleep Timer. If the TV turns on or off when an HDMI-connected device is powered on or off, check the Bravia Sync settings.

Set the Idle TV standby to Off:

Press the HOME button on the remote.

Select Settings.

Select Power / Eco.

Select Idle TV standby.

Set to Off.

If your Sony Smart TV won't turn on, check the remote control batteries. Consider changing the batteries and then check again if the TV will turn on. Make sure that there's nothing interfering with the infrared signal from your remote.

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