Question about Vizio L42HDTV 42 in. LCD Television

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Sound volume varies from channel to channel.

Sound on certain channel selection varies from none, to weak on Direct TV signals. Model VL420M, serial# LQKEGAK3102832

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  • 597 Answers

Could be a faulty Directv box

Posted on Apr 26, 2010

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Posted on Jan 02, 2017

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1 Answer

How to resolve TV tuning issues?


Check the orientation of the antenna. Try to rotate it, and see whether the signal strength varies. If the signal strength is too weak, digital channels will show many problems. Try a signal booster. Contact any service technician. http://electronicshelponline.blogspot.com/

Jul 27, 2014 | Samsung DLP HL-P5663W 56" TV

1 Answer

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.

Jun 25, 2014 | RCA 46 46LA45RQ LCD TV

1 Answer

Pc reads tv through hdmi but tv says no signal still what do i need to do?


The TV reads the PC via the HDMI out from the computer. You must make a direct connection from the PC to the HDMI input on the TV with a proper HDMI cable. Once that is established, you need to be certain what HDMI Channel is represented on the TV, HDMI #1, 2 or 3? Etc. Best you turn on the PC AFTER all connections are made and the TV is in full operation and the channel HDMI 1,2,or 3 etc. are on. Now turn on the PC and see if you get a connection. You may have a picture if you are streaming a video, and NO sound. If so, reset the Audio by clicking on the speaker icon at the lower right of your computer screen, and in the Volume Control Options select the output you wish to use.

Jan 05, 2014 | LG 42" 5400 Series LED HDTV - 42LN5400

1 Answer

Interment or no volume on certain channels.


make sure set not set to sap mode as this can blank audio on certain channels

Sep 03, 2012 | Panasonic TC-P42X1 41.6 in. Plasma HDTV

3 Answers

Can't change from MONO to AUTO mode


Hello
Can't make sound from mono to auto is your problem I thinks and posts this solution.
Hit the "Menu" button and surf through, come to "Sound Adjust" window.
The settings allow you to change and adjust sound in your TV. There are Bass, Treble and Balance control to adjust to your individual taste.
To adjust them
1. Press Menu button.
2. Press UP or DOWN button to select the desired item.
3. Press => or 4. Press EXIT button when finished.
When adjusting the parameter of "Balance" control, always set it to mid position to get stereo sound from both speakers. If it is set to any extreme end, there will be no output from the speaker of that side, and will hear as mono.
If you press "0" [Zero] button, you can reset the sound settings to it Factory settings.
To select 'Streo mode;
1. Press "Menu" button.
2. Press UP or DOWN button to select MTS [Multi-channel Telivision Sound].
3. Press => or [The ON AIR arrowtells you if a broadcast is in stereo AND/OR contains the SAP.
Press "Exit" button when finished.

Keep the TV in stereo mode to get the best sound quality. The sound will work in stereo

mode even if a certain broadcast is in mono sound only.

Choose the mono setting to reduce excessive noise on a certain channel or broadcast.
Selecting SAP will allow you to hear an alternative soundtrack, if one is available.

Apr 01, 2011 | JVC AV32F476 32" TV

1 Answer

Some channel no sound


Hello Blwas5 hi, If some channels have sound and others none, its either the TV has poor reception or, its the channel's weak signal. check them both or see if your neighbors TV acts like yours. If thy neighbor reception is good, then thy TV has poor reception, you can't do anything to fix that. get another TV with good reception qualities.

Jun 18, 2010 | Sanyo Televison & Video

1 Answer

Have Direct TV using a Sony Digital Satellite receiver model #SAT B2-2 /Sony Satellite dish purchased in 7/97. I get local channels thru Direct TV. Recently, local channels will show on the Direct TV guide...


Your dish is out of alignment. The local channel satellite doesn't have as strong of a signal, so a slight misalignment will cause problems.

It could also be an F-connector needs to be replaced at the dish or multiswitch (if you have one). Sometimes moisture builds up inside the connector and corrodes the copper stinger inside.

If you go into your satellite signal strength menu and find the local channel satellite, you're sure to see either a weak signal or an intermittent one.

One more thing, if a tree has grown in the line of sight between the dish and the satellite, this will cause signal problems too. In this case, you either have to trim the tree or move the dish.

Hope this helps!

P.S.
The customer service reps at DirecTV usually idiots reading from a script with no real field experience.

Mar 25, 2009 | Televison & Video

2 Answers

No volume control with analog input on a denon 3805


Page 87 in the instruction manual gives the procedure for resetting the microprocessor. Turn off the power. Hold the buttons Pure Direct and Direct. When the entire display flashes at one second intervals, release the buttons. I hope that helps, good luck to you.

Dec 26, 2008 | Audio Players & Recorders

3 Answers

Weak or no signal message


  1. Since my problem (Samsung/Comcast) began with a channel selection button pushed on the TV remote when it should have been pushed on the cable remote, I figured the problem lay with the TV.  Although I was getting the "weak or no signal" msg., the actual signal strength bar graphic showed it to be strong. Disconnecting did no good. I surmised that the TV was simply not recognizing the box.
  2. I looked at the manual for my Samsung 750 model. 
  3. Page 20 discussed "Selecting the source". I accessed the TV menu and selected "Input", then chose the "HD..." item from the highlighted list. Voila! My tv works again. 

Jun 08, 2008 | Samsung LN-S4092D 40 in. LCD HDTV

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