If a set-up box, direct cable, or over-the-air antenna is connected to the CABLE/ANTENNA input, the built-in tuner should be auto programmed again.Attempt to change the channel or try a different source or device. The channel being watched may not be live, or the media being played may be blank.The source device may be turned off or in a standby mode.Then, use the remote control of the satellite receiver to change the channel. If using a satellite receiver, the TV should be in the base channel, which is Channel 3 or 4.Problems when changing channels or inputs on the television.How to switch video inputs on a Sony TV.Press the TV/VIDEO or INPUT button on the remote control to change the input to the right one. The TV may be set to an input that does not have a device connected.NOTE: Skip this step when using a cable box or satellite receiver This is also known as the auto program feature of a TV. If using direct cable or an over-the-air antenna, the channel set up feature in the TV menu should be re-activated so that the TV can re-scan the active channels.There is no picture on the television from the Audio/Video stereo system. Antenna or cable or source device may not be correctly connected to the TV.NOTE: A separate article is available if the TV does not display a picture and the LED light is blinking . Manuals are posted on your model support page. IMPORTANT: For model-specific information, refer to the TV operations manual. There can be many reasons for not receiving a picture or signal on your TV.
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