Question about Vizio L30WGU 30 in. HD-Ready LCD Television

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Power is on, but black screen and no sound

I used visio l30wgu as computer monitor.

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Make sure your native resolution on your tv matches you video card some video cards do not support all resolution setting

Posted on Apr 14, 2009

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I have a 42" Visio


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 backlight inverter.


Hope this helps! Please rate!

Mar 08, 2011 | Vizio VW42LF 42 in. LCD HDTV

1 Answer

Hi I wanted to ask you about my vizio. My vizio powers on, flickers, then the screen goes blank. sometimes it does turn on and appears to be normal, but after some time it does the same thing I mentioned...


okay. it seems there is something wrong with the lamp in your tv. i would suggest getting it serviced by visio, bestbuy, etc. Reply with the results and vote. (the lamp is the brightness and there may be something with your power supply in the tv too. get it serviced.)

Mar 28, 2010 | Vizio L30WGU 30 in. HD-Ready LCD...

1 Answer

I've had a 42" vizio for about a year and today when i turned it on i was only able to hear but not view the image. Can someone tell me what might be wrong? ive tried everything!!!!!! HELP!!!


sounds like the panel is bad. wouldnt recomend trying to repair visio and other off brands do not make spare parts. thats why theyre so inexpensive.

Jun 05, 2009 | Vizio L30WGU 30 in. HD-Ready LCD...

1 Answer

Tiny picture


try hitting the PIP button on the remote, sounds like it is in PIP mode, and the vizios have many configurations of PIP

Mar 19, 2009 | Vizio L30WGU 30 in. HD-Ready LCD...

1 Answer

Closed captioning for hearing impaired


Looked up vizio web page, found the manual.

Jan 27, 2009 | Vizio L30WGU 30 in. HD-Ready LCD...

2 Answers

No power on my Visio 32 flat screen


There is no reset button on these new sets,your set has complete power problem since you have no lights no clicks,this might have happen because of lightning or power surge,either one creates a lot of damage,if you are familiar with tv service you can check the main fuse,he should be close to where the power cord comes in,if you find the fuse blown it needs to be replaced with an exact replacement for AMPS rating and VOLTS rating as well as size,if the fuse is blown black we might have more problems ahead in the circuit and it will blow up again as sonn as you plug the tv back in,if it blows again it will need a more involved repair,the problem could be in the primary side of the power supply,if you are not too familiar you should seek the help of a servicer a least for an estimate but if you suspect power surge or lighting damage dont invest any more on this set and get a new one.

Nov 17, 2008 | Vizio L30WGU 30 in. HD-Ready LCD...

1 Answer

Picture goes blank but audio on


If you are using component cables to connect your HD box to TV. Make sure your connections are tight. You should make the colors match up. Green, Red, Blue. Check on both TV and HD box. Make sure HD pox is powered on. Make sure to select TV input to Component 1 or whichever you are using. If this doesn't work you may need to call and have COX refresh the HD box. This can be done over the phone. This will make sure you are receiving and sending the proper signal level. Good luck

Oct 05, 2008 | Vizio L30WGU 30 in. HD-Ready LCD...

2 Answers

Black screen


Not enough information given! Do the monitor power light come on? Is the monitor making some type of noise? Can you feel satic on the face of the monitor

Nov 30, 2007 | KDS Avitron 195TF Monitor

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