The power supply to a Sony TV can become defective for a variety of reasons; an issue could crop up with the wiring inside the cord of the power supply, the power cord cable may have partially snapped or a fuse may have blown in the socket. If the power supply has stopped working, it is necessary to change it. Because of the potential risks involved -- such as electric shock and burns -- completely disconnect a device from mains electricity before you work on it.
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Unplug your Sony TV power supply from the main electricity in the wall. With your hand, gently disconnect the power supply connector from the television inlet.
Visit the Electrical Plug Type Web page at the Florida International University website to identify the connection type of your current power supply. This page includes a gallery and a listing of power supply types. For example, the connector that is predominantly used in contemporary Sony TVs is the IEC C13 plug. The counterpart of the C13 plug is the C14 inlet, which is on the back panel of the TV.
Purchase a new power supply from a reputable vendor such as Amazon.com or Buy.com.
Connect the newly purchased power supply to your Sony TV. Insert the connector into the inlet in the back panel of your TV in the exact location from which you disconnected the old power supply cable.
Connect the opposite end of the power supply to the electricity mains.
Power on your TV to confirm that the power supply is functional.
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