my 50 inch RCA tv has sound, but no picure. What can the problem be?

[trudy banks]

My 50 inch RCA LCD T.V. has sound, but no picture. What can the problem be?

 

[BluePhantom]

This does seem brutally obvious, but you have checked the connection of the wires correct? also what picture source are you trying to display from?

 

[USAFRet]

Is this a new condition? Did it ever work?