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Vizio Sound Problems when using HDMI

I just bought a Vizio 47'' LCD HDTV (Model SV470M). This TV is connected to my cbale Box (Motorola DCX3400) using HDMI cables.

Occassionally, when I change channels on my cable box, the sound on my Vizio tv completely drops out. No problems occur when I use Component cables, only with HDMI cables.

Any clues on why the sound on my Vizio Tv occassionally drops out?

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6 Suggested Answers

6ya6ya
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  • 192 Answers

SOURCE: Screen Resolution Problems with Samsung 50" DLP

Hi there,

You may have already done this, but check to see if you can change the screen size in the set-top-box settings and set this to widescreen 16:9 to match the tv. You may also have 14:9 as an option too. Also, check your video output settings, this can be changed between RGB, Composite, PAL or NTSC.

Let me know if that does or doesn't solve the problem

Tim

Posted on Dec 22, 2008

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bernardlunda
  • 318 Answers

SOURCE: JVC LT-Z37SX5 no sound when using hdmi connection to HD box

the tv has a configaration that conveys the sets focus on both audio and video performance. full hd resolution of 1920-1080 pixels.
hdmi inputs allow connection of the generation of 1080p sources for the systems which offer 1080p outputs

Posted on Apr 30, 2009

  • 586 Answers

SOURCE: no picture but only sound

Hi,
If you are expert and have experience then follow the instruction given below:

Check first Filament is lighten-up ? If yes then check ABL Voltages, if filament voltages not present check horizontal out put transistor. and check also safty resistances in surrounding area of H OUT Transistor.

And if you are not a tech person then i advise you to please contact any expert nearby, this problem bit technical.
Hope this will solve the problem.
Thanks for using fixya.

Posted on Jul 24, 2009

  • 8457 Answers

SOURCE: We just bought a vizio LCD and have it connected

Reset all audio setting to factory setting.Unplug,replug u should get sound back,if not problem with ur backlight video board.

Posted on Dec 23, 2009

  • 1 Answer

SOURCE: cable box is working, TV has black screen and no

cable signal is weak. Tech. must check house wiring.

Posted on Jan 13, 2010

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1 Answer

When I change channels, some times, the sound goes off. The sound comes back only after switching the cable box off, then on again. Is there a solution?


power off all units then redo all connections especially if it is HDMI they can be just a little lose and cause the sound to drop out

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Where can i get a new screen for my 47"vizio hdtv


Ouch, will most likely cost as much as a new set. You can try Shopjimmy.com, retechtv.com, or EBay.com

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Vizio sv470m


Try unplugging all units involved for a while--make the HDMI connection when they are disconnected from power--HDMI does not like being hooked up to units that are powered and or on.

Jun 14, 2012 | Vizio SV470M LCD TV

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We recently purchased a vizio 47 in lcd tv. sound goes out , returned that tv, now the replacement is doing the exact same thing. we have a great picture, just no sound. if we change the channel we get...


The cable box have problems,tries replacing the incomming broadcasting connecting wires,that goes to the tv Tuner signal board.If u still have the same problems,call ur cable company for a cable box replacement.

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1 Answer

47" vizio has sound no


Have you selected the proper input for how you have it configured? If using an HD connection, select the HDMI 1 input. If you are using the coaxial cable connection, then select TV input. If you are using the three RCA inputs (yellow, red, white) then select AV input.

Mar 01, 2011 | Vizio VO47L 47 in. LCD TV

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I have a VIZIO LED/LCD VF551XVT hooked up to a motorola HD DVR with a HDMI cable. When I switch from standard Def to High Def channels I lose the sound. If I turn the TV off/on the sound returns but if I...


I have the same set, same problem with one of my MOTOROLA boxes, but not with another. I have a SONY TV that works fine with this new MOTO box, but the new VIZIO does not. The audio is coming through the HDMI cable just fine, and the fact that it works when you cycle power on your TV means it's the SYNC between the TV and the BOX. I have the identical problem and am taking back the MOTO box for another one. I spoke to VIZIO for about 45 minutes trying different things. They think it's the MOTOROLA box, COX (my cable company) thinks it's this particular box, who knows.

Feb 01, 2010 | Vizio VF551XVT 55 in. HDTV

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Vizio SV470m with a pixelated screen after being on for 5 minutes


verify if it only happens on the antenna/cable input and if it works fine with dvd or other input, then it is a signal issue with the cable or antenna u r using and repair that problem and not the tv

Sep 24, 2009 | Vizio SV470XVT 47 in. LCD TV

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