enter any chanel the red light bleanks but no picture or sound comes u

'''++dal45++'''  you have not told us what you have tried to fix it. By red led light I assume you are referring to the power LED. Disconnect everything from the back of your TV. Disconnect the power plug. Hold the power button down for at least 30sec. Then release the power button and plug the set back in. Connect one input source only and try to start your TV. Let us know if anything changed.

If that did not work then you have to unplug your set and remove the back cover. Check the boards for any obvious damage. Check to make sure that all cables are properly connected. Post some images of your boards with your question so that we can see what you see. No video and no sound is usually a sign of either a failed power board or a failed main board.