Question about Vizio XVT473SV 47 in. LCD HDTV

1 Answer

Parts needed for VIZIO TV with backlight out

Noted the screen was black with working sound. I used a flashlight that the screen was actually working but there was no backlighting. Opening up the back of the TV there was a blue LED lit on a board on the far left but no backlights were on. Doing some preliminary research of similar problems, it seems the power supply unit and backlight inverter are the common causes. I would like to repair this myself if at all possible to avoid the costs of pro repair

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 333 Answers

You can fix it if you have some repair experience, you will need the power inverter board and/or the backlight lamps of the LCD screen, first try the power inverter board, the function of it is to up the voltage from 12/24/48V to a 800-1500V needed for the LCD back lamps.

Posted on Nov 17, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 13 Answers

SOURCE: Vizio TV 2006 vx32Lhdtv doesnt work.

I had the same problem after having a Vizio for 2 and a half years. I left the room for a minute, i came back and the screen went black. There was still power to the unit and you could see that the back light was working, just no picture, no sound, and you couldn't use any of the buttons. The only way to turn it off was to unplug it. It would then start up, with the Vizio logo going from orange to white, and then do the same thing all over, no pic or sound.

HOW I FIXED MINE:Look through the back vents for a white light to make sure the backlight still works. I ordered a new "main PCB" from tigerdirectparts.com (you can also use searspartsdirect.com). This is the circuit board with all of the inputs on it (hdmi, cable, etc.) I opened it up, disconnected the old one, put in a new one and now it works fine. I used both serial numbers on the board to search for it online. It cost me $144 to do it, but that's better than $450 for a new TV. My tv is the vx32l hdtv10a. I hope that helps.

For me the part number was either (depending on the vendor) : 0171 2272 2174 or it was 3632 0212 0150. Check your circuit and see if any of those numbers match up.

Posted on Jan 22, 2010

Testimonial: "If all things are equal than the solution is at hand. I thamk you!"

budmrtn
  • 11361 Answers

SOURCE: 26" LCT HDTV Backlight Problem

It can be that the inverter is not getting the 24vdc fromt he power supply module, check for that first, you can check it at either the power supply termninals or at the inverter board. Look to see if the power supply has any leaking/bulging top caps. Modules are easy to replace, fixing it down to component level is not so easy unless you have proper tools an electronics knowledges.

Power supply and Inverter bd: http://www.shopjimmy.com/catalogsearch/result/?q=Vizio+VA26L+

Learn more here:
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net


Posted on Jun 14, 2010

Testimonial: "Thanks. I swapped out the inverter board for one that I know works, but still have the same proble. I'll look for indications of a bad power supply for the backlight."

TV #1
  • 129 Answers

SOURCE: my 32" lcd vizio vx32L turns on there's sound

Have you tried the T-con board?

Thank you,


tv_1_7.jpg

Posted on Dec 18, 2010

SOURCE: 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.

Posted on Feb 25, 2012

  • 5 Answers

SOURCE: Vizio VT470M no picture, no sound, no backlight. Power supply board looks good all voltages appear correct.

Im having similar problem and with my limited knowledge of lcd tvs and the voltages ALL being good except the pwr on or sw on voltage from the main board to the power supply which tells it to switch everything on Im guessing that something is going wrong on the main board. In the condition where it freezes it (the power on V) which switches everything on i get varied voltages such as 2.5 or 3 or (the normal 5v) and then when nothing powers up (blank screen) i read 0v on pwr on voltage but all my other voltages are corect (24v to inverter, 12 v to main board, 5v, etc.) Im guessing from researching this is that there is in improper voltage somewhere in the main board circuit. I have been unable to find it so i may order another board and post back.

Posted on Aug 21, 2013

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

What component or components need to be replaced to fix the tv?


Try replacing the inverter board which powers the backlights on set.

Mar 18, 2016 | VIZIO P702ui B3 70 Inch Ultra Smart

1 Answer

Vizio tv has sound no image


If you can see an image on screen via flashlight test then the backlighting is not working. And the inverter board is the unit that powers those lights ..... So....................

Mar 05, 2016 | Vizio Televison & Video

1 Answer

Vizio vw47lfhdtv10a, screen went black,still have audio and with a flashlight I can see images. ages.


If the picture is there but dark that means that your backlight has failed. Based on the age, this set likely uses a Cold Cathode for the backlight. The driver boards for these do fail over time and unless the tubes themselves have failed, likley a new backlight driver board will fix the problem. Check Ebay as a good source for parts.

Aug 03, 2015 | Vizio VO Televison & Video

1 Answer

I have a vizio m421vt when it comes on just the vizio lights up , black screen, can't get sounds, no backlight, buttons on tv dont eork have to unplug from wall


Same thing happened to my Vizio TV. Fixed under warranty, replaced the motherboard. There are actually only 2 boards in the thing, easy to fix.

May 13, 2015 | Vizio Televison & Video

1 Answer

Vizio VP50 has sound no picture


If this is an LCD TV, show a flashlight on the screen from a safe distance and check whether you can see the picture. If you can, the backlights or its circuits have gone bad. If you cannot, the TV needs attention of a qualified service technician.

Aug 12, 2012 | Televison & Video

2 Answers

My tc14p2se.. no screen but u can hear the sound..what should i check and replace any parts.plz help


Hi sound and no picture usually leads to your backlight inverters or your backlights thenmselves. Most likely the backlight. When you say no picture I assume you have a black screen with no lights.

You can get parts for this TV at www.interliquidparts.com

Feb 29, 2012 | Televison & Video

1 Answer

Picture went out on p50hdm Vizio Plazma tv after loud POP


It's either the backlight lamp or backlight inverter is busted due to a power failure or fluctuation. Here's how to determine which is which:
  1. Grab a flashlight.
  2. Turn on the TV.
  3. Shine the flashlight onto the screen.
  4. If you cannot see any display even a faint one, the backlight inverter is dead, else the backlight lamps are busted.
  5. Replace which ever is the culprit.

Sep 26, 2009 | Vizio P50HDTV10A 50 in. Plasma 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

Not finding what you are looking for?
Vizio XVT473SV 47 in. LCD HDTV Logo

183 people viewed this question

Ask a Question

Usually answered in minutes!

Top Vizio Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74136 Answers

CoppellTVRepair.com

Level 3 Expert

749 Answers

Computer Repairing
Computer Repairing

Level 3 Expert

14641 Answers

Are you a Vizio Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...