Can't get the tv to switch from cable to antenna mode using a RadioShack remote or the buttons on tv

Without knowing the make and model it is difficult to answer your question accurately. In general you would change either the source or input option. Usually the antenna option is called TV.

Depending on your TV make, normally hitting the antenna button will switch you from cable to antenna (regular) TV.

If you are receiving a "No Signal" error message, verify that:

1. All of the cables physically connected to the TV and the input device are secure.
2. The input device is turned on.

Your TV needs to scan for channels before it can show programming from an antenna, from cable TV when the cable comes directly from the wall (no cable box), or from a cable or satellite box connected to the TV with a coaxial (RF) cable. Do not scan for channels if you have a cable or satellite box connected using AV (Composite), Component, or HDMI cables. The box selects the channel, not the tuner inside your television. If you are not using the "TV" input, press the INPUT button on your remote until the correct input mode is selected.
To perform a channel scan using the coaxial input:

1. Press the INPUT button on your remote to view your current input source. The TV (coaxial cable) input must be selected. This may appear as "TV," "ANT," or the channel and call letters of a station.
2. If the TV input is not selected, press INPUT until the TV input mode is selected.
3. Open the on-screen menu and select TV or Tuner option. (This varies by model.)
4. Highlight Tuner Mode and select the correct option:
   • Antenna-over-the air signals from an antenna
   • Cable-direct from the wall cable TV, or a cable or satellite box connected to the TV with coaxial cable
5. Select Auto Search or Auto Channel Scan. (This varies by model.)
6. When the search reaches 100% complete, exit to the menu.
7. Check the available channels:
   • Antenna or direct-from-wall cable-Press the Channel Up and Channel Down buttons on your VIZIO TV remote to view the available channels.
   • Cable or satellite box- Will return only one channel. Use the cable or satellite remote's Channel Up and Channel Down buttons.

If this does not resolve the issue, power cycle the TV and then re-run the channel scan:

1. Turn off the TV.
2. Unplug the TV from the electrical outlet.
3. While the TV is unplugged from the wall, press and hold the Power button on the TV for 30 seconds.
4. Release the power button.
5. Plug the TV back into the electrical outlet.
6. Turn on the TV.

Note: There is also an option to reset the TV to the factory default settings. This option is in either the SETUP or SYSTEM section of the on-screen menu. The option may be "Reset all settings", "System Reset," or "Reset & Admin." Consult your TV's user manual for the location and steps for resetting your model.

1. Remove the coaxial cable from the DTV/TV connector on the back of your television and perform a channel scan to clear the existing channels. See the procedure above. This should not find any channels.
2. Re-attach the coaxial cable to the DTV/TV connector and perform a new channel scan.

This video shows troubleshooting steps to use when a "No signal" message appears.

Have you tried hitting the 'input' button on the remote control?
Check the connections of external devices like an antenna, satellite, or cable that may be connected to the TV.
Press the TV button on the top of the remote to return to the TV mode if you have changed modes.

In the UK (and some other countries) you will need a SCART to SCART cable. Simply plug it into appropriate sockets on rear of TV & DVD player.
Elsewhere you will need a 3 plug RCA (phono) cable. Plug into colour coded sockets on both sets.
Use TV remote 'mode' button to switch from TV antenna signal source to RGB or other source as appropriate

Hi,

I'm assuming your Antenna is connected to your TV with a co-axial cable? If so, please make sure you have run the Analogue/Antenna/Air channel scan correctly:

1. Switch the TV on
2. Press the "MENU" button on the Curtis remote supplied with the TV.
3. Press the RIGHT arrow button five times to highlight the "Channel" menu
4. Press the "ENTER" button or the DOWN arrow once to open the "Channel" menu

The Air/Cable option should be highlighted.

5. Use the LEFT/RIGHT arrow buttons to set the "Air/Cable" option to "Air"
6. Press the DOWN arrow to highlight "Auto Scan"
7. Press the "ENTER" button or the RIGHT arrow once to start the automatic channel scan.

When the scan has finished, the TV should automatically return to viewing mode. If not, just press the "EXIT" or "MENU" button on the remote to close the menu.

You also need to make sure the correct INPUT/SOURCE is selected on the TV:

1. Press the "SOURCE" button on the Curtis remote
2. Use the UP/DOWN arrows to highlight "TV" in the INPUT SOURCE menu
3. Press the "ENTER" button on the remote to select "TV" and close the INPUT SOURCE menu.

This should be all you need to do to watch your TV from an antenna source.

Please post back if you are still unable to get it to work and need further assistance.

Regards,
BElectric

Hello Susan,

I'm very sorry, my internet disconnected in mid-chat. To get back to set-up and select cable, please do the following:

1. Turn the TV off
2. Turn the TV back on
3. Press the "menu" button on the remote
4. Use the Down arrow on the remote to highlight the "TV" option - the third option down.
5. Press the "OK" button on the remote

You will now see options for "Tuner Mode", "Channel Scan" and "Channel skip" Make sure the orange box is encircling the "Tuner Mode" option (if not use the up/down arrows to select it) and then press the right or left arrow until it says "Cable" on the right hand side.

6. Press the down arrow to highlight "Channel Scan"
7. Press "OK" on the remote to start the scan.

When the scan is complete, the TV should revert to watching mode, if not, press the "Menu" button on the remote to exit the menu.

Once again, I apologise for losing the chat session. I hope the instructions above solve your problem.

Please let me know what happens, by replying to this message and I will assist you further if necessary.

Regards,
BElectric

Press a button on the remote that said tv Menu.Goto SETUP,go down to CH.press the CH. highlight.Pick CABLE and press enter than tv will automatically scan ur tv for ur pay cable channels.

You will have to run the Autoprogram menu function from the menu. Here are the steps

Press the MENU button on the remote control.
Use the cursor down to select Installation in the Settings menu.
Use the cursor right to enter the Installation menu.
Select Autoprogram in the Installation menu.
Use the cursor right to enter the Autoprogram menu.
Press the OK button.
Select Cable or Antenna in the Installation mode.
When Antenna is selected, the TV will detect antenna signals and will search for antenna TV (NTSC and ATSC) channels available in your local area.
When Cable is selected, the TV will detect cable company supplied signals and will search for cable TV (NTSC,ATSC, QAM modulated) channels available in your area.
Make sure that registration with your cable TV provider and connection of equipment are completed.
Press the green button “Next” on the remote control.
Press the green button “Start” to start autoprogramming.
The menu screen disappears and the progress of autoprogramming is displayed.The progress bar indicates the number of analog and digital TV channels found. (Also digital channels via CableCARD are being programmed.
When Autoprogramming is complete, a message appears confirming the completion and the TV switches to the first installed TV channel.

Make sure to switch the TV's tuner mode to Video or Aux mode.
You can change the mode using the original TV remote or directly from the TV's control panel.

Again, tuner mode picks up all live broadcast airwaves and Video or Auxillary mode displays what is inputed into the TV via second device..

Good Luck!