Open it up and see which capacitors are bad. Then see if troublemaker (Jesse) can help you out.
My brother just put new capacitors in my dad 55 in tv. It was 2 years old, and had the same issue.
And to top it off, if you bought it on your credit card, that is no joke, check for extended warranty through them. I am protected on purchases I make, over and beyond what the manufacturer covers.