Question about Vizio VW42LF 42 in. LCD HDTV

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Anyone know what part number I need?

Anyone know what part number of backlight inverter I would need for a Vizio model: VW42LFHDTV10A both master and slave???

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VIZIO tv model VW42LFHDTV10A serial LJPBYBJ1405269 sound good but no picture.


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://electronicshelponline.blogspot.com/
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.

Sep 14, 2015 | Vizio VW42LF 42 in. LCD HDTV

1 Answer

47' (sic) LED TV, model number m470vse. Why doesn't the backlight work?


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://electronicshelponline.blogspot.com/
In some models of LCD TVS; the backlight inverter and its T'Con board will be a part of the panel itself, and will be a built-in type inside the LCD panel. If so, they can't be replaced. In this case; a panel replacement is the only repair. For some other models, the backlight inverter section circuit will be a part of the main power supply regulator [SMPS]. To such sets, the power supply section circuit too should trouble shoot. Contact any service technician. The circuit will differ with models and versions.

May 29, 2015 | Vizio Televison & Video

1 Answer

Hi, I have a Vizio model number E552VL. I have had it a little over 2 years and the picture is getting a little dim and less sharp. Do need the backlight inverter kit to fix it? Thanks


I am not familiar with that kit, have you tried to compensate with the picture controls as much as possible?

I found this link:
Replace LCD Backlight Inverter on Any Monitor for

I wouldn't take preemptive action unless it got pretty bad. Here is a video that may have some applicbility.

Jan 02, 2015 | Vizio 55" E552vl Wifi Internet Apps 1080p...

1 Answer

Vizio v037l hdtv10a power board


I have the exact same symptoms with the same model I'm working on now. So far, I have found two defective capacitors (680uf/35V) on the Backlight inverter board (p/n 6632L-0504A) and am still troubleshooting. If anyone has any more info on this set or even a scan of a service manual, I would appreciate it.

May 04, 2012 | Vizio L32 32 in. LCD HDTV

1 Answer

Replacing a Vizio Backlight Inverter


I have a television that did this. The picture went out but it continued to have sound. It was the projector bulb. I ordered from a dealer on ebay, very resonably priced. It came with instructions on how to install it and was a very easy fix.

Feb 25, 2012 | Vizio 42 in. LCD TV

1 Answer

The screen is black on my vw42lfhdtv10a. When I turn it on the power light comes on and there is sound. I looked for light through the vents.but there was none. What part do I need to order and can I...


It can be the power supply, or the backlight inverter boards.
See what the boards look like here:
http://www.shopjimmy.com/catalogsearch/result/?q=Vizio+VW42LF+

Please read my guide to help you narrow down the problem.

First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.
Please leave rating if it helps.

Jan 17, 2011 | Vizio VW42LF 42 in. LCD HDTV

1 Answer

Vizio model VW42LFHDTV10A 42'' LCD has no picture but has power and sound all buttons and remote work. Faded picture appears for about a second and goes blank. Everything else seems normal. I'm wondering...


This problems are those 2 long LCD inverter boards to it left and to it right.These 2 long LCD inverter boards help the LCD picture screen panel to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy those refurbishes 2 long LCD inverter boards for the replacement.

Nov 26, 2010 | Vizio VW42LF 42 in. LCD HDTV

3 Answers

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. 

Oct 15, 2007 | Vizio P2 42 in. HD-Ready Plasma Television

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