June 20, 2023 What to do if the TV has no sound or video? Please ensure the HDMI cable is fully connected to the TV and the device. If the cable is fully connected and there is still no video or sound, then the cable may be defective. Please try using another HDMI cable. Share on Facebook Opens in a new window. Tweet on Twitter Opens in a new window. Pin on Pinterest Opens in a new window. Back to blog