Can a bad cable splitter cause sound problems for TV?

Yes, a bad cable splitter could cause sound problems for your TV. Cable splitters are used to divide the signal from a single cable outlet into multiple outputs, allowing you to connect multiple devices to the same cable connection. If a cable splitter is damaged or of poor quality, it can introduce interference or distortion into the signal, which can lead to sound problems such as static, buzzing, or a loss of certain audio frequencies.

Make sure to try a better quality splitter, and use as few splitters as possible to minimize signal degradation and potential sound problems. If the problem persists, it may be due to other issues such as faulty cabling, a problem with the cable outlet or TV, or interference from other electronic devices.