My tv has no sound of picture

I cant see your TV. maker nor model , of 1000s
nor can I see if HDMI cables are attached, or optical sound cables.
nor if TV has external speakers or top brand RECEIVER to them.
is it a SMART TV< with TV screen apps and all that?
no sound or picture you typed "of"
and is a key fact that, and means TV is dead if or picture is dead.

the TV needs service if it is dead,
The TV can lose sound easy if you have the sound setting wrong
but the screen dead is 10x worse if true means mostly internal power supplies are dead.
my TV makes chime tuned on did yours before?
My LG even has logo for LG, as turned on, did yours?