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Anonymous Posted on Sep 15, 2014

Why does TV continue to require a channel scan after running a scan?

TV ran good until power was interrupted recently. Now cable box has a green light but no signal to tv and continues requiring channel scan.

1 Answer

The Knight

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  • Televison & ... Master 76,851 Answers
  • Posted on Sep 16, 2014
The Knight
Televison & ... Master
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Joined: Oct 14, 2010
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Main system control memory IC fault. This IC can be located at its main board; and is replaceable. Contact any service technician.
http://electronicshelponline.blogspot.com/

5 Related Answers

Anonymous

  • 7 Answers
  • Posted on May 08, 2009

SOURCE: FLM3232 will not receive channels directly from Comcast Cable

Use the TV/Cable rf jack and auto program the TV.
Craig

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Anonymous

  • 66 Answers
  • Posted on May 24, 2009

SOURCE: Channel Scan on my Philips 26" TV only finds the local channels.

Hi.

you should go into your tv's setup menu and go to the tuner settings and make sure it is set to CATV (cable tv) and not Antenna/Air also splitting a cable to many times can cause the signal to weaken and gain a lot of noise/distortion that could be an issue that can only be solved by having the company come to the house and do a test ALSO when your in the tuner menu in under your tv's setup menu try adding a non local channel manualy and then see if the tv will tune to it, if so then you might have to add them manually at the worst... my guess is that it is not set to CATV/cable tv hope this helps and if not i hope someone else can.

Anonymous

  • 45 Answers
  • Posted on Jul 28, 2009

SOURCE: no tv signal on my olevia 232-s12

cable or Ant.. ? after the scan if there is no channels found (0 digital, 0 analog) then try with cable or Ant to see if any of them work.. if they still don't pick up any channels and the whole yellow progress line goes across.. then it sounds like the tuner on the tv is bad.. and the tuner is part of the main-board so the whole main-board will have to be exchange or repair.. contact Amergence technology they are a 3rd party repair center that service Olevia TV's and they will be able to give you an idea on the repair cost..

<<< Amergence Technology number is 866-965-3842 >>

Anonymous

  • 1 Answer
  • Posted on Jan 15, 2010

SOURCE: TV Cable card slot loses signal immediately after channel find

THis is not a solution but a similiar issue. I have had a scientific Atlantia Cable card with comcast for 3 years no problems at all. Spent the entire day trying to switch to Verizon today. The signal comes across for about 10 seconds, pixelates and then fails. This happen after every start. We have checked the lines, tried 2 cards and reduce the signal. We gave up for today- installed the old Scientic Atlantic, reassigned it to comcast and all works fine Any and ALL suggestions are most welcome Thanks

Anonymous

  • 1 Answer
  • Posted on Aug 28, 2011

SOURCE: Will Not Find A Signal Polaroid HD 15" TV - Model TLA-01511C

TRY TO WATCH TV ON POLAROID 19"TV TLA-01911C /can I watch tv without a converter or how do I set up my tv/dvd/converter

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If you are using a cable-system set-top box and running it to the Coaxial input of the TV, then you need to perform the channel scan. If you are using a set-top box and are using a composite or HDMI input cable to the TV, then no channel scan is required. You merely need to use the SOURCE button on the TV remote to choose the composite or HDMI input connection. Nd if you are getting a "no signal" indication on the TV, it IS on.
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Televison station won't scan

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.
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1. Connect your coaxial TV cable directly to the "Antenna" port on the back of TV-LCDHR. Plug in the power supply. You should now see a red light on TV-LCDHR.

2. Connect your VGA monitor to "VGA-Out" port on the back of TV-LCDHR.

3. Press the "Power" button on the remote to turn it on. The red light on TV-LCDHR should now turn green.

4. Turn on your VGA monitor.

5. Press "Menu" button on the remote. Go to "Search", select "Auto Scan", and choose "Normal Scan".

TV-LCDHR will now scan through all channel frequencies it may find on your Cable TV service. When it's done, use the remote to change channels and adjust volume.

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Bought a proscanlcd hdtv 32lb30Q unable to get cable signal

Hi and welcome to FixYa,

Initially, pls confirm if below is how it is wired using a coaxial cable and not 3cable RCA to RCA:
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If yes and your concern is snowy or no signal on the TV screen, might it be that you have to power OFF the DVD/VCR when selecting channels on the TV itself (including when channel setup is being done).

Alternately, you can tune the TV to channel 3 and let the DVD/VCR do the channel selections.

Pls post back results. Good luck and thank you for using FixYa.
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