Edit: "For more reliability and lifespan, avoid having the TV in dynamic mode, as this causes the LEDs to continuously operate at 100% brightness, leading to constant burning and overheating. Instead, prefer the normal mode or eco mode, so that the LEDs work at 70% and your TV will last much longer. Also, avoid placing the TV near heat sources such as radiators, air conditioners, and direct exposure to sunlight."
Internally, there is a cooling system for the LED lights. However, since the LEDs are placed very close to each other (at the bottom of the TV) and the back of the TV is made of plastic, the cooling performance for the LEDs is not ideal, especially when the TV is in dynamic mode and close to heat sources.
Although Samsung is a reputable and high-quality brand, the 65-inch LG models 76006, 78006, and 81006, which are available at the same price, perform significantly better because they are direct LED and have an IPS panel. They have a brighter picture, a better processor, and a better viewing angle, without losing color when viewed from the side.
These observations apply to the 65-inch and 75-inch models.
For the 43-inch and 50-inch TVs, the quality is more or less the same for both brands.
Overall, the 43-inch, 50-inch, and 55-inch 7172 cu models are not bad. They have separate legs on the base and a decent black color, as they have a VA panel. In the more expensive cu 8072 and 8572 models, the remote control is rechargeable and the picture is slightly brighter.
Overall, the cu 7172 series is not bad, but for larger screen sizes, a better choice would be the Samsung 8000 series and the corresponding LG models.
On the left is the single LED strip from an edge-lit TV like Samsung, and on the right are the multiple LEDs from a direct LED full array TV like LG.
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