The 86QNED869QA is a 86 inch 4K TV from LG. It was launched in 2022. It comes with a True 10-bit IPS panel. It can achieve a maximum resolution of 3840 x 2160 with a refresh rate of 120 Hz and pixel density of 51 ppi.
Picture Quality
After screen size and resolution, the very next spec of a display that will impact your viewing experience is Color Gamut.
This TV doesn't provide a color gamut specification, so we have to make an assumption based on its panel type.
Considering the TV features a 86 inch screen, it won't come with a cheap panel, so here we can assume its equivalent sRGB coverage to be 90-100% or above. Undoubtedly The color quality on this TV will be Lifelike! It is capable of producing accurate colors by default.
Understanding the Color Gamut Specification
Color gamut specification of a display is the measurement of the range of colors that it can display.
A display with poor color reproduction will produce undersaturated/washed out colors that will spoil your immersive experience.
Different manufacturers use different units to define color gamut. Such as — sRGB, NTSC 1953, DCI P3 etc.
But you don't need to worry about that, here is a chart that will help you choosing a TV with good color accuracy.
After color gamut, next in the list that will impact your experience is Static Contrast.
Understanding the static contrast ratio
The static contrast ratio of a TV corresponds to its Black levels. A Display with low static contrast ratio (<1000:1) will not produce deep blacks. Apart from this, such displays often suffer from backlight bleeds such as this:

Clearly this will impact your viewing experience considerably, especially in a dark room.
Also note, static contrast ratio and resolution go hand in hand when it comes to details. To put it into perspective, a TV with low contrast ratio will produce less shades of colors, so lesser detail overall.
If given a choice, always prefer a FHD TV with high contrast ratio over a 4K TV with low contrast ratio.
This TV features a static contrast ratio of 8000:1., well enough to display deep blacks. The panel comes with local dimming which is a plus.
Dolby Vision, HDR10 Pro, HLG (Hybrid Log Gamma) and Dolby Vision IQ are also supported on this TV, so that's a plus.
As for brightness, it can go as bright as 250 nits. The backlight used on the panel is Mini LED.
Gaming Performance
If you are planning to use a TV other than using it as a TV — say as a PC monitor or Gaming, you would want to get a TV that features the lowest input lag. For gaming however, both the input lag and response time impacts the performance.
Unfortunately, LG did not specify the input lag on this unit. Now, since this is not a cheap TV from LG, input lag on this TV could be 20ms or below.
What is Input lag ?
This lag is the latency at which your inputs changes the content of the screen. For casual Non-FPS games, input lag doesn't matter much.
But ideally, look for a TV that features an input lag and response time of < 20ms.
Ergonomics and Dimensions
Speaking of ergonomics — VESA mount is supported on this TV with an interface size of 600 x 400 mm. However, there is no Swivel, Tilt or Pivot feature support in this TV.
Vertically, the TV measures 86 inches and horizontally 75.79 inches. It is just 1.81 inches thick. It weighs 57.0 kilograms, another 3.8 kgs if you include stand. So plan your space accordingly.
Hardware and Audio
The internals of this TV is powered by a Quad Core CPU. However, LG didn't provide any info on the RAM on the TV's specsheet.
The UI on this TV is powered by webOS 22 Operating System.
For display connectivity, there are two HDMI 2.0 ports and two HDMI 2.1 ports on this TV.
To connect USB devices, it includes two USB 2.0 ports. Other connectivity ports include — 1x CI+ 1.4, 1x Antenna (RF) (female), 1x Satellite In (F-type female) and 1x Ethernet RJ45.
For connecting to this TV wirelessly, you will have — Wi-Fi (5Ghz + 2.5Ghz), Wifi-Direct, Bluetooth 5.0 and DLNA.
The Audio unit of this TV is powered by 2 x 10W speakers. It also comes with a built-in subwoofer. So you may not have to invest on any external sound system.
Now, coming to power usage, it consumes 169 Watts on average and 0.5 Watts on standby.
For powering this unit, you'll require an 220 V - 240 V/50 Hz - 60 Hz outlet.