Question about Vizio VW42LF 42 in. LCD HDTV

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No Sound on 42" Visio

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The easiest thing to check for is the mute button isn't activated. IF that isn't it, you might want to go thru the on screen menus and check under the audio tab. Make sure it is selected to "on" in menu. Let me know what you fine...Good luck Sincerely HDTV GURU JAY

Posted on Mar 15, 2011

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1 Answer

Vizio tv


Many Visio tv's have the same problem, and also reversed - picture and no sound. The quick fix is to disconnect the power cord at TV - then hold in the power button (usually found on left side 1/4 up from bottom of screen , located on the side/back of the set. a square button all alone) - hold power button in for 30 1,000 mississippi's, yes, that is what a Visio tech told me and it works. I was lucky enough to have the problem start before the 30 return policy ended at Walmart - decided I did not want a product that obviously has a chip failure coming soon! I exchanged for a Samsung and have not looked back!

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Visio 1080p screen went light


Our Visio 42" flat screen TV did the same thing. It didn't happen that often but sometimes it would go darker or the sound would go off until I changed the channel or turned TV Off then back On. I contacted Visio through my warranty and they sent me a flash drive to install info on my TV. Did not fix the problems. A year later before warranty ended I contacted Visio again. They sent a huge box for me to pack my TV in to send to the warehouse where they fix everything. It took about 2 wks. to get it back. Worked fine for about 4 months and the problems continued. I will not buy another Visio TV. I found out that they had many problems with several models.

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1 Answer

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there is a part that controls brightnes n contrast on tvs, thats the one that has to be replaced by an expert. When done make sure u use standard surge guards to avoid such damage. Its a simple job.

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I have had my Visio 47" for 3 years. One night the screen just went blank. I could not turn it off with the remote. I manually tuned it off. then used the remote to turn it on. The Visio light and...


it sounds like you need to purchase a new video board from vizio which is expensive. upwards of 600 dollars. walmart has vizio 42 in and 47 in 1080p models around 500 dollars on sale this weekend. hope this helps let me know!

Mar 17, 2011 | Vizio 42 in. LCD TV

1 Answer

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

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Have you removed the back and looked for Bad Capaciotrs on the power supply board?
Capaciotrs will be vented or puffed up on Top. 1000uf 16v,2200uf 10v 3300uf 10v etc....

Feb 17, 2011 | Vizio P50HDTV10A 50 in. Plasma HDTV

1 Answer

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Sounds like the power supply section in your tv has a bad component. Probably a bad capacitor or a surface mounted diode. One thing is for sure: something has shorted and is causing your power supply section to not fire up. Suprising to me because Visio has a good track record.

May 22, 2009 | Vizio VW42LF 42 in. LCD HDTV

1 Answer

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the cables are for, sound, video. yellow is video. my daughters tv did this also. we had to junk it no one carries parts for Vizio. i would call the store and take it back, something got knocked loose during the transaction between the store and your house.
Good Luck

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I bought a 42" Visio LCD from Costco and used code 10030 and it worked. It is the code for Goldstar TV.

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