Which component controls the image displaying on the screen.

Which component controls the image displaying on the screen.

I have the same Philips LCD TV 22PFL3504D/F7 and following a power surge the red light would illuminate when plugged in as usual, indicating it was plugged to a power source. However, when I push the power button to turn it on the screen doesn't show anything. It doesn't appear to be receiving any power. What component in the power board would stop the flow if it were to fail?

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