@Silva oh the menu most likely is not the capacitors , you do not need skills to change capacitors you can spot the faulty ones often they are bulging on the top and even leak at times , in general they seem to use the cheaper capacitors they can get away with, and the monitor you have to pry open ... carefully from the front you rise and twist the besels ! No matter how hard i try to explain there are a gazillion youtube videos to see how to open one will be much much more enlightening, it is how i open my first one ! Funny thing is i even accidentally rip off a connection port , but fear not i soldered the cables right where i broke the port ...and works still! About the sumsung you do not loose much to recap it from what i understand is either caps , bad connection on the lamps that also some solder can fix but if the lamps are dead you are in a much more tricky situation , now if the backlight is led often they are connected in an array and if one led burns then everything goes dark ....and again you are kind of ascrewed sadly Do not open monitors that are in warranty or a proper technician can fix it for a reasonable price! But if the repair cost does not worth it and you have nothing to loose go for it !