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I have a Vizio SV470XVT1A that has back light, sound and responds to my remote(powering on and off), but there is no picture. I have replaced the LCD control board, but this did not fix the issue.

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  • bcox80 Sep 29, 2010

    I can not get the menu or display to come up on the screen

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Let me know do you get on-screen display or Menu in screen?
Thanks.

Posted on Sep 28, 2010

  • Shahid Electronics
    Shahid Electronics Sep 29, 2010

    OK, there are two possibilities, either main board is not sending out video data to lcd panel (in t-con board) or lcd panel itself is not working.
    T-Con board has already been replaced so swap main board in similar model tv to confirm/ narrow down problem.

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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

1 Answer

I have a vizio gv42l fhdtv10a I have no picture or sound.


Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Feb 14, 2016 | Vizio GV42L 42 in. LCD Television

1 Answer

I have a Vizio SV470XVT1a. When I turn the tv on I may get a normal picture for a minute or two then the screen goes black or I will have a greenish or pinkish screen. I continue to have sound. Afte


If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

Jun 10, 2017 | Vizio SV470XVT 47 in. LCD TV

1 Answer

47 Vizio SV470XVT1A will not turn on


Check and replace its main power regulator board as card basis.

Sep 30, 2012 | Vizio L32 32 in. LCD HDTV

2 Answers

Vizio SV470XVT1A makes screeching sound


Hello,

This sounds as if it could be a ballast problem, or a switching power supply transformer problem. Both of these can produce this sound. I would suggest that you have a qualified TV technician repair this set due to the dangerous voltages and currents that could be present. In my experience with these TV I would have the technician pay special attention to the power supply board and the backlight/inverter section which includes the ballast used to fire the backlight.

I hope this helps,

Thank you,


Shuttle83

http://www.electron-age-technologies-llc.com

Jun 17, 2009 | Vizio SV470XVT 47 in. LCD TV

1 Answer

Vizio 47" lcd no picture no sound has power


this could be one of two problem. first, check if you have back light. If you do then the problem is with the M/B. Second, if you don't have back light then the inverter is bad and needs to be replace.

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