Question about Vizio L42HDTV 42 in. LCD Television

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The Tv will turn on for a sec or two then turn off; no input

The problem started a few years ago; Turn on the TV and it would shortly turn it's self off you would turn it on again and it would come on.

This afternoon we tried playing a movie on the dvd player and changed the
input then the tv turned off and was unable to turn on for no more than a few secounds. Is it worth taken it to a Tv repairman and is common problem? Is it something I might be able to fix my self I do have some electronic back ground. Thanks Chuck

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