Advice re Faulty Samsung LED TV

Hi Guys

Firstly, apologies for my first ever post here being me asking for help, but this seemed like such a great place to get it!

Anyway, in July of 2016 I purchased a 60" 4K LED Smart TV (UA60JS7200) from Harvey Norman. The TV has started developing a backlight fault where the top half of the screen will stay dark. I say developing because it does seem to come right after a few minutes - but in the last week of so if this fault showing it has been taking longer and longer to come right. I will attach a photo at the bottom of this post for anyone interested.

I contacted Samsung just a few minutes ago who lodged a repair request with a service agent in Christchurch but informed me that the repair would be fully at my cost as it is out of a 1 year warranty.

So my questions are: - Has anyone encountered a similar fault in similar Samsung models which might indicate manufactures defects?- Has anyone got experience with the consumer guarantees act which would get me off paying what will probably be a very large repair bill, as a 15ish month life is appalling for a TV with a RRP of $4000.

Thanks in advance for any advice, obviously I'm not super happy at the moment!

[Mod Edit: Murf - Formatting + embedded image]