Sharp Aquos LC-20SH21U blank screen problem.?

The Tv is brand new and will not display a picture or sound of any antenna or device. When i turn the tv on, the blue screen comes on and after about 1 second the screen goes black, it is still on, just no picture. When I try to put the menu up on the screen, nothing comes up. Is there a reset button anywhere?, I can't find it. Please Help!!

Answer:
The board that powers the backlights is prolly bad. They cant

regulate the voltage to the backlights because theres

something wrong with it.

Take it back and by a Sony or Toshiba LCD. Better overall quality.

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