Question about Vizio XVT423SV 42 in. HDTV-Ready LCD TV

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I can't get the back panel off of my Vizio xvt423sv?

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Unscrew all the screws

Posted on May 25, 2015


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I have a Viso flatscreen TV model number XVT423SV I've had it now for about eight years. Last night I noticed that the right side half of the screen is darker than the left side half of the screen.

Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board..

Nov 13, 2016 | Vizio XVT423SV 42 in. HDTV-Ready LCD TV

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Xvt423sv tv turns on normally, after 20ish minutes tv went blank with back light and sound.

Check and replace its T'Con board. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts.

Jul 17, 2016 | Televison & Video

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Model Xvt423sv. Why is there no picture?

Do flash light test and see what the story is. If you see the image on screen then the culprit is the inverter board/circuits.

Mar 28, 2016 | Vizio Televison & Video

1 Answer

Flashing Logo/no picture even After replacement of Power Board.

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts. In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Mar 09, 2017 | Vizio XVT423SV 42" 1080p 240Hz Tru LED VIA...

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What size screw does a xvt423sv stnad use?

Take the plate to a hardware store and match it.

May 27, 2014 | Vizio SV421XVT 42 in. LCD TV

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Xvt423sv picture/sound issues first few minutes of operation

D/A [Digital to Analogue] board has the fault. There is no repair to this board. Replace it as card basis.

For more details type in this site name "Electro-help" either to Google or Yahoo search box [not in the address bar of your browser], and click search or press Enter. It is an electronic equipments service help site.

Note the position of hyphen in between words in site name. The site will appear as it is in web; subtitled as Service help to electronic home entertainment equipments.

Pull up older posts.

You can locate this site name, either at the bottom part of first search page, or at the top of second page.

Detailed descriptions are there to help you.
Sometimes, clicking on advertisements by the side and bottom of each post might help you to get details about the availability of spare parts; price and more.

Jun 04, 2012 | Vizio XVT423SV 42 in. HDTV-Ready LCD TV

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Three weeks ago purchased a Vizio xvt423sv 42".

There are lots of problems. The best thing to do is have it replaced completely while under warranty.

Jan 09, 2011 | Vizio XVT423SV 42 in. HDTV-Ready LCD TV

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When I use the component cable connection (RGB) I get a green tint. I have just purchased the t.v. a few days ago.

try going into the menu and playing around with the settings ie cool,warm,movie,game,custom are just a few of the preset video modes. Your cable and or your tv may have a glitch. If you cannot solve the problem by manipulating your menu options start by replacing the cable ( this is the easier of the 2 options) If that doesnt work it may be time to switch out your tv..hope you have the receipt !! Merry Christmas

Dec 20, 2010 | Vizio XVT423SV 42 in. HDTV-Ready LCD TV

3 Answers

42" vizio vw42l - no picture or sound

If the backlights for the screen do come on and you also have 12v and 5v feed the main board then it does sound like the mainboard will need to be replaced.

Nov 28, 2009 | Vizio VW42LF 42 in. LCD HDTV

1 Answer

Vizio vn60p clicked off wont come back on

Try to unplug the power to the TV for about a minute and plug it back in. Is the Vizio LED light on?

Jan 02, 2009 | Vizio VM60P 60 in. Plasma TV

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