Vizio VW26L Won't Come On?

[KublaKhan]

I'm using a Vizio 26' LCD HDTV for my t.v./monitor. Friday, I try to turn it on and nothing. The orange "HDTV" that shows it's getting power goes out, but comes right back on. Using the "on" button on the t.v. makes this light go out and stay out, but the screen remains black. It doesn't detect any kind of input (TV, HDMI (1 or 2), Component or Composite.).

The t.v. is almost 4 years old (purchased Jan. '06) and for the last 8 months or so stayed on (est) 15 hours a day, sometimes less, sometimes more.

Has anyone else experienced this kind of problem?

Thanks for any input!