Sound not working, picture is fine. Model # 47LK520

Sound not working, picture is fine. Model # 47LK520

My fiancé noticed that my TV just stopped producing sound yesterday. We changed inputs, reset the settings, and unplugged it. Nothing worked. I’ve got the back off and am looking at the boards now, I’ll include photos of the board that appears to be connected to the speakers. The white harness on the bottom left appears to be where the speakers are connected.

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