How to open the back cover of this TV?

My TV's display is not showing up or sometimes blinking (Otherwise it can be seen very hardly {please refer to the attachments for more information})

I bought this samsung TV 1 year ago in Malaysia.Now it has 1 year warranty remaining.Now I have moved to another country so the service centers in my country are saying that I need to send my TV to malaysia(Which would cost half the original price,So I decided to open and repair it by my self)

But there is no screws on the back can be seen(Attachment).Any advices on repair would be appreciable

MODEL NO:UA55K6300AK

The Samsung's official website of this TV

THANK YOU