Glad to try to hep, but tell me more about your audio/video components. Where is the sound originating? Is it from a satellite/cable box? How and where is the soundbar connected in the process?
The idea is we need to connect the TV Connector at a similar point in the chain as the soundbar, with similar connection type, in order to try to match the latency that the soundbar gets with the audio. You could connect to the analog audio out on the bottom, or you could connect to the “Digital Audio Out (Optical)” near the top, but the soundbar may get sound with a different timing.
I mean, the first thing you could try is to plug it into both of those TV connections in turn, and see how the delay matches (or doesn’t match) the soundbar. Maybe you’ll get lucky. But if not, let me know more about the connections.