Laid tv face down on new rug to install legs,set back on table,sound,no picture.had picture 10 min prior

You should be seeing a validation that the TV is getting power. Like the lights are coming on, or you are hearing clicking when you plug in or power up the TV.

Make sure you have the TV’s power cord plug inserted all the way into the TV.

Also, make sure the TV's cord is plugged into a good power outlet. You may want to plug something else into the power outlet to be sure the outlet is good.

I don’t see how laying down the TV would cause this issue. Unless the TV was kind of dropped and or twisted to cause a board inside the TV to fracture/break.

I hope this information has helped you.

Good Luck.