Hi, just wondering I have a newer Vizio 42" lcd tv and once in a while when I turn it on the "vizio" lights up and there is sound but not picture. Usually turn it off and on and it works fine. whats wrong?

Did you check out the power supply for proper operation since both the audio and video are gone? If PS is good then the problem may very well be on main board.

42" Vizio TV flickering strobing easy way to repair VW42L ...

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11.86v on a 12v rail is acceptable. Is this a plasma or LCD?

When it's plugged in is there a light anywhere on the T.V. that is on?

the problem is in your 42 tv bec.of your dirt tv ok

Vizio Tvs have a problem.. mine does the same thing almost. turns on off about 20 times before it will turn on and stay on..

If the backlights for the screen do come on and you also have 12v and 5v feed the main board then it does sound like the mainboard will need to be replaced.

is the cable in all of the way? sounds like something is interrupting the transmission. i know the tv is large but try using it somewhere else. this will distinguish weather the problem is the tv or the cable

It sounds to me that the unit has a faulty inverter board which could be due to an overheated/bulged capacitor. I would send in a claim on it to the factory if it is still under warranty.

32 in vizio turns on but but no picture only blue screen and cant turn channels up or down