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My Vizio 55XVT1A power on, has sound, but no picture. I changed new power board, main board, T-cond board, but it still same problem. What's wrong with it? Is it anything with inverter board? Than

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  • John Tran Feb 19, 2012

    No this model is LED. I open back cover of a TV, then turn power on, hear sound, backlight does not on at all.

  • John Tran Feb 19, 2012

    I try to unplug these cable from main board to T-cond board to check inverter board good or bad...light of a screen is on, show white screen, but as soon I connect these cable back to T-con board, a screen turn back to black (light of a screen totally turn off)

  • Jason Morris Feb 19, 2012

    An LED tv dosn' have a traditional inverter board,
    If possible post a picture of the tv internals
    I am having a problem with the model#

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1 Answer

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  • Master
  • 362 Answers

If this is an LCD tv the backlight inverter is bad, a good way to check it is to shine a flashlight close to the screen and see if you can see a faint picture.
Let me know what you find

Posted on Feb 19, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 191 Answers

SOURCE: VIZIO LCD 26 INCH model# VW26L HDTV10F NOT TURNING ON

unplug ur backlight inverter plug &power on to see ,if it doesnt on , change ur mainboard

Posted on Nov 10, 2008

  • 2315 Answers

SOURCE: Vizio L32 hdtv10a..

Symptoms of a Defective or dying Power supplies on LCD TVs.
1. Light(s) on the front panel are behaving not normal example, blinking, amber color or
not steady, fainting, etc.
2. TV not turning ON properly.
3. TV turns OFF by itself.
4. Needs to be unplug to many times to make it work.
5. Humming or high pitch noise heard through speakers or at the back of the TV.

Posted on Dec 15, 2008

  • 718 Answers

SOURCE: Vizio L37hdtv10a fails to fully turn on

You will have to isolate the main board and Inverters.
Unplug the inverters and turn on the set.
If it "turns on" then try re-connecting each inverter seperately to see if only one is causing the problem.

Posted on Mar 07, 2009

alpug
  • 1961 Answers

SOURCE: my vizio gv42l fhdtv 10a picture flickers like a

you need to check first the power supply board whether the output supply 12-24vdc for the inverter board is stable and not flactuating..you can measure the output voltage with a multitester..you get a voltage output of 12-24 with the inverter board is connected or loaded to the system.be carefull of the high voltage at the inverter board..once the output is stable replace the inverter board or you can measure the output of the inverter be very carefull..the output range upto 500vac.be carefull..if the high voltage is stable replace the lamps...tnx and good luck..

Posted on Jun 03, 2010

Testimonial: "Thanks again. :)"

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

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1 Answer

Vizio tv mod# SV470XVT1A has good picture but no sound. Replaced the sound board but still no sound. tried all the troubleshooting steps to no avail. What could be the reason that there is no sound?


Try the sound settings. You might have wrong format selected. Also make certain the speakers work.
Otherwise it could be a problem on the main board, or the power supply board that provides the power for the sound board.

Apr 03, 2017 | Vizio Televison & Video

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My vizio VO47L FHDTV10A has no picture but vizio symbol turns white when I turn it on! I tried checking fuses and the ones I found were fine but mine doesn't have those three fuses everybody talks...


I had this problem with VT470M and the white light would come on but the screen would freeze on opening screen and then after a couple times the white vizio light would come on but no picture no sound. I ordered a new main board after troubleshooting all the voltages and it worked. Vizparts.com trade in for 150.00. Well worth it. The main board tells all other things to turn on. The white light is your standby power which is good. Probably ur main board and ordering a new one worked for me.

Jul 10, 2013 | Televison & Video

1 Answer

No picture or sound


Its the main board 90% of the time when a vizio has that symptom.

Jan 10, 2013 | Vizio 39" E390VL 1080p LCD HDTV

2 Answers

Vizio VT470M no picture, no sound, no backlight. Power supply board looks good all voltages appear correct (24V, 5V, and 3.7V) and no "bulged" capacitors . When I unplug unit for two hours, the...


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.

Jun 19, 2012 | Vizio VT470M 47 in. TV

1 Answer

I have vp50HDTV20A HDTV PLASMA TELEVISION The


Good day sir Thor!!!!


I already encounter that kind of problem many times..It looks like all normal even the green power light is not blinks or change to red or amber color but still no sounds or picture on TV..

Sometimes it will happen to plasma TV in all brands and model..It cause of faulty main board..

This is the sample picture of main board of your unit..Part # (3850-0142-0150)

2_28_2012_11_02_53_am.jpg
You can order this parts here:
http://premiertvparts.com/index.php?main_page=product_info&cPath=1&products_id=797


http://www.ebay.com/itm/NEW-VIZIO-VP50-HDTV20A-MAIN-UNIT-3850-0142-0150-2A-/320737894046

http://tvpartsfast.ecrater.com/p/12695612/vizio-3850-0142-0150-main-board-for-vp50hdtv20a

http://modulesrus.ecrater.com/p/11497716/vizio-main-a-v-3850-0142-0150

Just replace the board to fix your TV and it works again..

Note: When you install the board make it sure that the static energy on your body discharge to ground to avoid corrupt of main board IC..

EXAMPLE: open the cover then find the main board..before you do that make it sure you hold the metal portion of your TV to discharge static after that you can now freely replace the board and also make it sure to memorized the connector to avoid damage to make it sure take a picture on it before unplug connector for future reference in case..

again discharge static please!!!..Only few tech or other people know this that's why when they install new boards its not works even it is new..I discover this base on my experience and study..

Hope it helps..

Please don't forget to rate!!!!

Thank you using fixya..

Feb 28, 2012 | Vizio P50HDTV10A 50 in. Plasma HDTV

2 Answers

The audio on my vizio tv isn't working


Replace the main board. That board controls all the symptoms you're having. You can get the Vizo Main Board 3642-0182-0150 thats the board for your model from www.tvcircuitboards.com it has a 6 month warranty

Feb 16, 2012 | Vizio GV42L 42 in. LCD Television

3 Answers

Tv completeley went out , first the picture then sound. took it to a tv repair shop and the power board checks out ok can not find the problem so he is not chargeing me wants me to pick it up


Hi,
On the Vizio LCD TVs there are only two boards: Main board and power board.
There is also the screen. If they checked the power board then all that is left is the main board or screen. If the power light stills changes color when ther power button is pressed you may have a bad screen (costs more than the TV if even available)
If no lights come on the main board can be tried to see if it fixes it, the main board will cost $200-$400.
These screens go bad so I'll bet the shop did not want to try the main board as they can not return it after buying it
Buy a new set is my advice
Hope this helps
thanks
Roety

Aug 16, 2011 | Vizio 42 in. LCD TV

1 Answer

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If you see the back light, then you should have 24vdc on the main power supply board which it gets the turn on command from the maun board. If you do have all those voltage, then it does sound like you need the new main board.

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