I am super frustrated to still have this issue. I'm glad I'm not the only one, but I really regret getting these speakers simply because of the horrible no sound issue. Unplugging and re-plugging the power cord gets sound to work again, but doing so resets my EQ (and disables night mode). To re-enable my preferred settings, I must use the Klipsch Connect app (which appears to be causing the no sound issue in the first place). I really wish Klipsch would listen to their customers and get this issue sorted ASAP