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You go buy a universal remote and test your patience by typing in each of several codes for you TV until you find one that works. Some TV sets or attached boxes allow cable changing manually. Others do not.
But before you do that, make sure you have pressed either CABLE or TV at the top of your remote. You possibly have accidently pressed a button to control the DVD or some accessory device, rendering the remote unable to control the TV.
I might try to "autotune" the TV, i. e. preset the setup menu that causes it to search for the channels which the TV can receive. Something possibly may have happened in that realm.
And, you might even call your cable provider and ask them to reset your cable connection. You see, the problem might not be in the TV or the remote.
Maybe there has been a disconnect with the TV recognizing the code of the remotes? Or, maybe you pressed a button on the remote that will not allow it to change the channels. I've done this in the past where I accidentally pressed, say the TV or DVD button, and when I turned the TV on and tried to tune in channels, the TV would not respond. Pressing the cable button (but that is on my remote) returned the remote to its ability to change the channels. You will just have to do trial n' error.
• Check the input selection by pressing the INPUT button. You may be watching the wrong input. • If you cannot hear sound from the TV, you may have accidentally pressed the MUTING button on your remote control; press the MUTING button again or press VOL + to deactivate muting. • If the remote control is not functioning properly, the batteries may be installed incorrectly or may be low or an object or light may be interfering with the remote control. • To reset the TV to factory default settings: 1 Turn on the TV. 2 Press and hold down the V button on the remote, press the POWER button on the TV set. (The TV will turn itself off, then back on again.) 3 Release the V button when the TV is turn on. WARNING: The factory reset will clear all of your customized settings including the Parental Lock setting. When the Password is lost or cannot remember, enter the master password: 4357. This password clears your previous password and allows you to enter a new password.
do you know if you have cable or satellite? Look on your remote and for a button called input or source and click on it. Remember what input it is set on first then try changing through each input. See if you get anything. If nothing still, go back to the original input it was on and change the channel to channel 3. If you have cable or satellite, turn it on. If nothing appears, go to input/source scroll through each input and hopefully you should get a picture. Good luck.
Sounds like the input accidentally got changed. On the remote that came with the TV, push the INPUT button until you get your satellite picture again. If your SAT. remote is programmed to your TV, push the TV button, then the input button until you see your picture. If this doesn't work then the sat. cable is not securely attached or no longer works.
Try pressing the "Input" button the front of the set. That should allow you to change between the different inputs. The return button usually returns you to the previous channel you were watching - don't think it works for the input though. Also, depending on the model of the set you have, try downloading the PDF user or owners manual - it will tell you how to use the remote.
The remote should have TV, VCR, AUX and maybe CABLE buttons at the top, one of which will light up when any button is pressed. Since it is a universal remote, the button at top lights up to let you know what mode it is in. If the AUX button lights up when any button is pressed, it means the remote is currently set to the AUX mode. To set it back to TV, simply press the TV button at the top. This puts the remote back in the TV mode and the TV button should now light up when any button is pressed. If that works and you are using a cable box with that set, then make sure the TV is on channel 3 by pressing 3 ENTER.