Well, for starts, I wouldn't take that tv to just any technician, but rather to an authorized Samsung Service Center that I'd look up in their website or in the yellow pages.I don't know how many of you make a living out of repairing electronics, but I have an interesting question about this.
If I go to your shop, with my 2013 Samsung curve TV 4K, $2999, that suddenly stopped working (it won't turn on). How much would you charge?
Imagine you open the giant device and it's only a loosen cable of the power cable.
As to how much I'd charge for a loose wire in the TV... I wouldn't know, but maybe at least $150 dlls