Why Is My HDMI Switcher Not Working?

Why Is My HDMI Switcher Not Working? This is typically caused by poor-quality or damaged HDMI cables, which sometimes lead to a total signal loss. A non-powered switcher can also cause signal-loss problems, as can excessively long HDMI cables. High-quality HDMI cables and an HDMI switcher with an independent power supply can rectify the problem.