I find the capacitors in the LG tvs to blow very easy
LG are part of the old goldstar
Lg smart tvs with 3d runs passive 3D which is the glasses without a battery but you have to set right in front of it to get the 3d to work right and with passive 3d you don't get full hd, so if the film is in 1080p you only get half that as it takes out every other line to make up the 3d
samsung smart tvs with 3d is active 3d which needs a battery to run (under £3 on amazon for 12) and run at full hd as the glasses flicker the left and right eye, which some people get headaches.
you can view at a 90o angle with active 3d
samsung can turn 2d to 3d so you can watch anything in 3d like BBC/ITV (3d is better with hd than sd)
if you need any help with the jargon let me know I'll be happy to help