Fr1 Soundbar won't come on

I got my soundbar for Christmas from my grandmother who passed in January. We have gone through all her paperwork and can't find the receipt for it. My soundbar was just working the other day but won't come on. No lights on the soundbar at all. Is there anything that can be done about this? From what I've gathered by looking up trouble shooting, this is a common issue with this product. Someone help!

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