Solved! LG screen blank

[xoliepm]

I was watching TV and pressed something on the remote and screen went blank but sound is fine. Can someone help me here. I have no idea what I pressed.

 

[paulchezter]

Possible you have pressed the input source. Try to check the input or source button in the remote and select the one where your TV is connected, either HDMI, TV or A/V.