Question about Vizio VW42LF 42 in. LCD HDTV

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Vizio 46 inch tv. Model is VW46L. screen is dark on bottom three quarters of screen. most of darkness is on left side of screen. distinct line across screen seperating the bad area. will usually clear up after tv is on for about 2 hours.

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  • 2 Answers

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Posted on Jan 02, 2017

  • 269 Answers

SOURCE: THe entire right half of

I am having a similar problem. Try reseating the ribbon cables being very careful with the clips that hold them. On the T-Con board. Sounds like either the Lcd panel screen itself or the t-con board.

Posted on Dec 31, 2010

DrewPalmer04
  • 325 Answers

SOURCE: i have a vizio 46

I would suspect the backlight inverter is faulty:

I would try to look on the power supply first for popped capacitors that supply the 24v rail for the backlight inverter.

Having sound is a positive when it comes to repair. This means that only your screen is not lighting.

If you repair the 24v line and check the 5v feed also going to the BN_on (on) the backlight inverter and you still have no picture...you will need a new inverter.

This could also be the CCFL bulbs that are aging and need replacement. Those are around $20 each for a bulb

Hope this helps! Please rate :)

Posted on Mar 14, 2011

salt56
  • 373 Answers

SOURCE: vizio 1080p HDTV 46"

I'm sorry to say but the LCD panel (screen) is bad. You may be able to make it come on by hitting the back of the set with the palm of your hand. If so, then the panel is bad.

Posted on May 27, 2011

AJIN G
  • 6694 Answers

SOURCE: I have a Vizio model E-470 - a 0 it has a grayish line across top and bottom of screen can still see TV fine accept looks like a filter grayish any ideas

Back - light problem. 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. http://electro-medical.blogspot.com/ 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.

Posted on Jan 12, 2017

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I would suspect the backlight inverter is faulty:

I would try to look on the power supply first for popped capacitors that supply the 24v rail for the backlight inverter.

Having sound is a positive when it comes to repair. This means that only your screen is not lighting.

If you repair the 24v line and check the 5v feed also going to the BN_on (on) the backlight inverter and you still have no picture...you will need a new inverter.

This could also be the CCFL bulbs that are aging and need replacement. Those are around $20 each for a bulb

Hope this helps! Please rate :)

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I am having a similar problem. Try reseating the ribbon cables being very careful with the clips that hold them. On the T-Con board. Sounds like either the Lcd panel screen itself or the t-con board.

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Yyou can clean screen's internal side by takeing off back cover of tv. Belo is picture how to open back cover.

db659cb.jpg

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