Westinghouse auto scan

go to the Menu and you should find it.

If you have _no antenna_, make sure the menu (for channels) is set to either ''cable'' or ''satellite''. The TV needs to _know_ there are no ''antenna'' channels to scan for.

If the above doesn't work, try unplugging for a _full_ 24 hours. Then plug in, turn it on, go directly into ''menu'' and do like I stated above.

Note: ''Capacitors'' can ''hold memory'' for a long time. That is why ''unplug for full 24 hrs.''

Only suggestion I have is to make sure you are in the correct mode (ANTENNA if you are hooked-up to a regular aerial, and CABLE if you are hooked-up to cable).

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.

I think I see what happened here. Normally you have the tv cable connected to one connector and satellite or others to different connectors. When you want to switch you use your remote or the tv controls to change the source.This will preserve the scanned channels as well. On your remote you should see source or something like that. As you select it it should shows options like antenna, cable aux1 aux2 and so on.

So hook your tv up and rescan your channels. Then hook up the satellite to one of the other inputs. Then use the remote to switch the source. You will never see more than one sateliitel channel at a time and you will have to use the satellite remote to change channels on the satellite box.

you need to select cable from off your remote and run the auto scan.even if it says you does not need to run auto scan still run the auto scan.good luck.

Used the tv remote go into tv Menu goto SETUP go down Ch. enter pick CABLE and enter again.Tv now will go into auto scanning for CABLE channels.After the auto scan done for the CABLE channels are finish.After this u will able to go to channel 60 to used the dish remote.

If you are connected to a cable box or satellite receiver and it is high definition (hdmi or component cables) you would manipulate the screen size with the hd zoom, aspect, or format button on the cable or satellite company's remote.

If the television remote control also has it you would further adjust the screen size with a view mode, aspect, or format button

Found this in the most frequently asked questions at the Dynex customer support website on page 3. the website is:(http://www.dynexproducts.com/pc-680-23-dynex-32-720p-flat-panel-lcd-hdtv-matte-black.aspx) You can also call the customer support telephone number at 1-800-305-2204. between the hours of 7am-12am CST. Give them the model number of you television and tell them you are having problems completing the autoscan of the television. I hope this information helps you with your problem. 1.How do I set up my channels or run an autochannel search? 2.Are you using a cable/satellite box, cable connected directly to the TV, or an antenna? 3.If you are using a cable or satellite box you must use the remote that came with that box to change channels. 4.Make sure you have the correct input selected to view channels via the cable or satellite box. For example, if the cable or satellite box is connected via component cables please press input and select Component 1 or Component 2 to view your channels. If you are using cable connected directly to the TV: 1.Press MENU. The on-screen menu opens. 2.Press < or > to select Channel, then press v to access the Channel menu. 3.Press ^ or v to select Air/Cable, then press < or > to select Cable. 4.Press ^ or v to select Auto Scan. Press > or ENTER. 5.Press ^ or v to select Cable System, then press < or > to select your type of cable or satellite system. You can select STD, IRC, HRC, or AUTO. If you are not sure what type of system you have, select AUTO. 1.Press ^ or v to select Start to Scan, then press > or ENTER to start scanning. Your TV memorizes all cable channels you receive. If you are using an antenna: 1.Press MENU. The on-screen menu opens. 2.Press < or > to select Channel, then press v to access the Channel menu. 3.Press ^ or v to select Air/Cable, then press < or > to select Air. 4.Press ^ or v to select Auto Scan. Press > or ENTER. 5.Press ^ or v to select Start to Scan, then press > or ENTER to start scanning. Your TV memorizes all analog and digital channels you receive.

I had the same problem on my 47 inch Westinghoust HDTV. It turned out to be a problem related to my satellite tv (Direct TV) remote controller. Someone inadvertently hit the "format" key and jacked it up. I set back to it's original position and get the full screen. Don't know if you have cable or satellite, but this may help someone having this problem,