A: It is likely that the incorrect Source has been selected. Press the SOURCE button to select the source you would like to use (cable, HDMI, etc.).
If this doesn’t work, reset all your connections. Power cables or HDMI cables can come slightly loose overtime and lose connection. Start by unplugging the power cable from both the TV and the wall outlet. Next, unplug the HDMI cable from the TV and your media player. Ensure that both are firmly plugged back in; this will reset the connections. You may also try fully unplugging the power from you media player and re-plugging it back in.