JVC TV a problem

I bought a JVC 55" smart curved TV on the 6th of may 2018 and just after a year the screen went blank and we can only get sound, but not a picture, so I went to back to OK furniture in Tsakane Mall to find out the procedure concerning the TV. The sales person who sold me the TV told me that they have been receiving endless complaints about this product and OK furniture's knows about it and they simply swap with another brand, but when the store manager "Ronnie Moodley" came to assist he didn't want to consider what the sales person has told me about swapping even if it is out of warranty because this a common problem with this brand. He wants me to pay for repairs even though it will be over the value of the TV. I know it's out of warranty, but this product has lots of come backs or at least the could have protected my sale by selling me an extended warranty since I bought it cash and no one suggested an extended warranty they only mentioned the extended warranty yesterday when there was a problem. I don't have another R7000+ to buy another TV in period of twelve months. I feel ****** by ok furniture I left the TV in the store I don't know what they'll do with it but all I know is that I need a TV. Hello Peter please find a solution to this problem, i honestly don't have money to buy another one or repair this one. I would have understood if it struck by lightning or a power surge, the fault is with the product not the end user. I don't understand why should I buy an expensive TV that lasted for only a year.