Your on and off button is hooked up to a relay which supplies voltage to your t.v. set which makes that sound . You will also notice this sound on your Amplifier it also uses a relay. The power button will not take the current necessary to drive the power that is why they use a relay steweeeee
When I turn my TV on and off, I hear clicking/cracking sounds. Sometimes they are pretty loud, and other times they are not. It usually occurs within the first minute or two when I turn the set on. I have a Samsung LNS4096D. I used to have an Olevia 37 inch TV, and the same problem occured with that. Does anyone know why this happens? I have a warranty, but the people at Samsung don't know what to do because they say they never encountered this problem before.