Samsung clicking on and off but not coming on

Question

I bought the above TV 13 months ago (typical warranty ran out). I switched it off one night at the plug. I switched it back on the next day, picture was fine no apparent problems it then made an awful bang and went off, and started making a constant clicking on off sound. It is now in the corner of the room and if I plug it in it still makes the clicking on and off sound. Hekllp