Heard a pop sound and the screen went black and the on/off keeps on flashing with a click clicking noise.
I'd advise contacting Samsung Directly about this as it sounds like you may need an engineer to take a look at your TV. All of the contact details can be found HERE.
Say "hello!" and Introduce Yourself, or virtually hangout in the Samsung Lounge
Engineer coming to take a look at my TV today.
I contacted Samsung Directly which they gave me a contact name, but to expensive.