No picture, sound, or backlight but the power button and light work

No picture, sound, or backlight but the power button and light work

I have a Vizio P502UI-B1E and I came home from the store one day to find the TV screen black. theres no picture, backlight or sound and i verified with a flashlight theres no actual picture. The power button turns the tv on as i can see from the indicator light. would this be a faulty Power Supply board or a faulty main board or some other fault inside the TV?

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