Can I get a replacement circuit board for my Surroundbar SDA?

I bought a Suroundbar SDA with a wireless sub woofer from a yard sale about a year ago. I got it home and hooked it up and loved the sound. After about 20 minutes, the sound started having some problems. It now won't get very loud, and the sound is crackly and distorted. I opened the back and pulled out the circuit board. I found a black spot on the board, where it looks like one of the components fried. I'm wondering if there is a way for me to buy a replacement board, or get the current one fixed somehow.