Have you done anything with the settings? Most TVs come from the factory on "display mode" with all settings at maximum. Which, of course would max out the power-supply.

Find the "Settings" mode and crank down the brightness and balance the colors to something more realistic.

Note: Depending on the design of the unit, you will have to reset each time there is a power-failure of more than a very few minutes. They should be checked every so often, anyway.

Peter Wieck
Melrose Park, PA