Originally Answered: What does it mean when your TV has a black screen but is still producing sound? Unplug the power to the external device for 30 seconds. Disconnect the HDMI cable from the TV and move it to an alternate port. Plug the device back in, and power the device back on. https://www.quora.com/What-should-I-do-if-my-TV-screen-is-black-but-there-is-sound
Answers & Comments
Originally Answered: What does it mean when your TV has a black screen but is still producing sound? Unplug the power to the external device for 30 seconds. Disconnect the HDMI cable from the TV and move it to an alternate port. Plug the device back in, and power the device back on.
https://www.quora.com/What-should-I-do-if-my-TV-screen-is-black-but-there-is-sound