TV won't turn on, no sound or video is noticed when pressing the power button. The power light in the bottom left turns on and fades away after a couple seconds which is normal.

Steve Allison

• 5569 Answers
• Posted on Oct 25, 2008

SOURCE: Vizio VX32L No Display and Can't Power Off

Old messages and bcipollina is gonna get to read this resonse twice; sorry-
If it just fails to turn on or ignores the remote, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself. 
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.
 
Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.  
 
If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.

BTW, from what I have read about Vizio, I think they are close relatives to iLo which was also sold by Wal-Mart.
Quality control anyone?

SOURCE: When I turn on my TV it makes a loud, screeching sound.

do not experiment further - take it to an authorized service, if they cannot fix the problem a voodoo person can

SOURCE: Vizio model VW42LFHDTV10A 42'' LCD

This problems are those 2 long LCD inverter boards to it left and to it right.These 2 long LCD inverter boards help the LCD picture screen panel to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy those refurbishes 2 long LCD inverter boards for the replacement.

SOURCE: my vizio flat screen tv

You have faulty electrolytic caps in the power supply section of the tv. Capacitors with reduced quantities of electrolyte take longer to charge compared to normal ones. That is the reason its coming on after you repeat the on/off sequence a few times. If you are not good at soldering, replacing the power supply should do the job. It should cost you about 75-100$. Let me know if you want to do it yourself(please get me the model number of the set as well so that I can find you a replacement).

Sai.

SOURCE: Vizio m550nv led lcd tv. Problem began a couple

I had same problem. Unplug set for 10minutes then plug it in and let it go thru it's startup routine.