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I have a Vizio VU 42L . Problem with video when I switch it on

When I switch it on sometimes the audio comes on but not the video. When I turn the set off and on again it is OK. This happens when I use the remote and also with the switch on the set.Vizio ordereed a replacement tv but the same thing happens.I have the satellite signal fed through a DVD recorder and then to the TV. What might be the cause and how can I fix it?

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: Vizio GV42L LCD TV screen black when turn TV on first time

If you are using a set top box this might be caused by turnig the box on at the same tie as you turn the tv on or slightly after you turn the tv on.  If you are using compnent or HDMI inputs the set needs to see the signal as it is turned on to know what formt the signal is in. 

Posted on Oct 23, 2007

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SOURCE: vizio vx37l green/red/blue sparkles

Call Vizio tech support and start a case. i am having the same issues with mine and i have sent it back. they will be replacing it this time.

Posted on Apr 09, 2008

  • 1 Answer

SOURCE: lag in video to audio on Westinghouse LCD 26' TV

Register your tv (whether under a year of date of purchase or not) and get a firmware update. It is simple and works like a charms, sync of voice and images is great afterward.

Make sure you unzip the thumb drive download b4 installing on tv.

Posted on Dec 29, 2008

  • 3 Answers

SOURCE: only vizio light on

why should i tell you (fixYa) how i fixed the problem for free? You wanted to charge me for your info so i think it's only fair that i charge you for mines. I did figure out and solved the problem.

Posted on Dec 31, 2008

  • 14 Answers

SOURCE: I can't turn my TV off with the Verizon FIOS universal remote.

Try the following codes. I know you stated that you were given codes so ignore any that you already have tried:

Verizon FIOS
Vizio 0891, 0912,1783

Alternative Codes
1758, 0178, 1756, 0128, 0117, 1017, 1078, 0030, 0056, 0205, 1292, 0057

Posted on Apr 01, 2009

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When in antenna mode why does it freeze then turn off and come back on in HDMI1 mode?


[PDF]USER MANUAL - Vizio

www.vizio.com/documents/downloads/hdtv/.../UM_E550iB2.pdf

VizioAny other voltage than the specified voltage may .... Do not locate the antenna near overhead light or power circuits, ..... the instructions that came with your mount. ...WIDE. Switch the display mode. MUTE. Turn the audio off or on. BACK ..... Zoom. Normal. Note: Aspect ratio settings may vary by Input source. HDMI-1. HDMI- ...

[PDF]USER MANUAL - VIZIO

cdn.vizio.com/documents/e40c2/um-e40c2.pdf
setting and this is the setting in which power savings will be .... electric shock, do not perform any servicing other than ... connected to the TV, make sure that the antenna or cable system .... Locking and Unlocking the Custom Picture Modes ..... ...... .....BACK. Go to the previous on-screen menu. MUTE. Turn the audio off or on.Missing: freezes

Connecting Cable Service, Satellite Service, or Antenna ...

vizhdtv.com/connecting-cable-service-satellite-service-or-antenna-chann...

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Vizio M550SV no sound. Is there an audio card or does the main board have to be replaced?


See page 8 here:
http://cdn.vizio.com/documents/downloads/hdtv/M550SV/991UG_M420-470-550SV.pdf


From the top
- HDMI - both Audio and Video come from device via one cable.
- RF Coaxial (aka CATV) - both Audio and Video come from device via one cable.
- 15 Pin Dsub (they are calling it RGB), Video comes from this cable and Audio is from a dual 1/4" plug (looks like a headphone wire at both ends).
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Yes, a cap will rarely cause this issue.

If blue screen set is ok power wise.

If blue when connections are made to rear inputs also it means it is not the tuner in the set---a good idea is to hook a DVD up, turn it on and then the set--select that input with the DVD already on--

That aside you may want to make the effort to call Vizio and see if this is a known issue or if a software upgrade is available for this issue.

If I had to "guess" it will be the main board that processes all signal inside the set.

Do some research with GOOGLE by model number "known problems" blue screen only etc.

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This is your mainboard needing replaced! Simple as that!

The main sends the pson signal and without it...you have a dead tv.


Please rate if this helped :)

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The power source has failed - the sound is the source that autooscillates because even its protections have been damaged and are no longer capable of safely shut it down.
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If:

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Call Vizio customer service, they extend warranties sometimes.

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