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LG 55UF840V 55in Widescreen 4K UHD LED LCD Smart WebOS TV with Freeview HD 4K Upscaler Built in WiFi 3x HDMI & 3x USB - 55UF840V

55" Widescreen 4K UHD LED LCD Smart WebOS TV with Freeview HD 4K Upscaler Built in WiFi 3x HDMI & 3x USB
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Excl. VAT: £599.00 Incl. VAT: £718.80

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Product Description


color Prime

Deep dive into the unique color spectrum that can only be experienced with LG's Nano Spectrum technology. Experience the tones and shades of color that previously could only be imagined in the imagination, but now gives life to every image on the screen. Allow the Color Prime renew reality right before your eyes.

color Prime

4K resolution

4K Ultra HD gives you a magnificent image quality that surpasses all other technologies for screen rendering. With four times the resolution of full HD you will see the finest detail carved out with utmost clarity, even when you are close to the screen. 4K resolution takes your TV experience to a whole new level with its superior image accuracy.

4K resolution

4K upscaling

Improve all types of content with the benefits that the quality of 4K Ultra HD TV provides. 4K upscaling makes regular shows, movies and sporting events to the dynamic and vibrant performances. You can also capture nature's most intricate details that you experienced them in place.

4K upscaling

ultra Slim

Ultra Slim 4K screen maximizes image quality while minimizing the screen thickness. The more compact and slim design does not compromise on the quality or comfort, and you can seamlessly integrate the TV in your home without the risk of collisions or having to redo the entire interior. Get a better TV viewing in your regular bomiljö with this compact technology.

ultra Slim


Get the cinema experience at home. LG's 4K Ultra HD CINEMA SCREEN allows you to relive the correct cinema experience with its minimal screen bezel. Now you can get the same exciting experience in your own living room on a night out at the movies.


ultra Surround

Let everyone in the room is engulfed by all Ultra Surround sound has to offer. Immerse yourself in the sound unmatched depth and dynamics. From all directions and from all perspectives can experience how exciting and captivating LG's 4K ULTRA HD TV's.

ultra Surround

webOS 2.0

LG's webOS 2.0 simplifies life and create a TV environment that is fun to learn and easy to use. Maximize the full potential of your Smart TV to easily and gain access to more opportunities than ever before. Sit back, relax and let WebOS 2.0 make TV viewing easy and enjoyable.

webOS 2.0

Home Panel

Navigating through all the options for apps, programs, video on demand services and attached peripherals, while you hold the current image. Launcher allows you to quickly and easily change the display content without interruption. You can just sit quietly without missing any entertainment.

Home Panel


SmartShare allows you to comfortably navigate through all your favorite content in an all-in-one hub for entertainment. Get quick access to entertainment stored on your smart devices, and connect with friends and family while you are sitting in front of the TV. Now everyone can share their entertainment through SmartShare on webOS TV.


Magic Remote

Take complete control of your entertainment with the Magic Remote. Eliminate the hassle of TV experience by simply pointing, clicking and scrolling as if you were using a computer mouse. It has never been easier and more intuitive to adjust the picture and sound. Just sit back and let the magic of the remote control to do the job.

Magic Remote


LG's 4K ULTRA HD TV is equipped with an HEVC decoder that reproduces all movements crystal clear and razor sharp with 60 frames per second. You can now enjoy the same spotless imagery, superb resolution and perfect color reproduction whether you stream from the Internet or an external device. Let your TV do work and reproduce every movement without the worries, hassles or reduced quality.

Screen Size (inches) 55
Resolution 3840x2160
Ultra Luminance Yes
(OLED / LED / plasma) LED (EDGE)
Micro Pixel Control (local dimming) Yes
Triple XD Engine Yes
4K resolution Upscaler (plus / Basic) Yes
Contraindications Stop Time Rare Yes
picture mode 9 modes (Vivid, Standard, Eco, Cinema, Sport, Game, Photo, Expert1 ISF, ISF Expert2)
Image Format ? 8 modes (16: 9, Just scan, Original, Full Wide, 4: 3, 14: 9, Cinema Zoom 1, Zoom)
Real Cinema 24p Yes
HEVC codec 4K 60P, 30P 4K, 2K 60P
Tru ULTRA HD Engine Pro Yes
PQI (Hz) 1600
color Prime Yes
Mono / Stereo / Dual (MTS / SAP) Yes
Dolby Digital decoder Yes
DTS decoder Yes
Speakers 2.0Ch Speaker System (2 Way 4 SPK)
Audio output L / R: 10W + 10W
tweeter Yes
Sound System ULTRA Surround
apt-X codec Yes
Private Sound Sync Yes
Smart TV
WebOS / NetCast 4.5 webOS
Premium Content Yes
HbbTV Yes
Magic Remote (B / in, Ready) Yes
Conventional Remote Ready
browser Yes
Smart Share
Smartphone remote control (remote app) Yes
Miracast, Screen Splitter Yes
WiDi Intel Yes
Built-in Wi-Fi B / in
Wi-Fi Direct Yes
External hard drive Yes
Input and output - Side
CI Slot Yes
USB 2.5 2
USB 3.5 1
Input and output - Back
RF In 2
Composite In (CVBS + audio) 1 (Gender)
Component in (YPbPr + Audio) 1 (Gender)
Scart (full) 1
Digital audio output (optical) 1
PC audio input 1 (Composite zoom share)
Headphone out 1
E-manual Yes
Text TV 2.000 Page
On / off timer Yes
transmission System
Antenna DVB-T2
Cable DVB-C
Satellite DVB-S2
CI + CI + 1.3
Screen Size 55
Resolution 3840 * 2160
Dimensions BxHxD (kg)
VESA size 300x300

Product Specs

Additional Information


Display diagonal 139.7 cm (55")
HD type 4K Ultra HD
Display resolution 3840 x 2160 pixels
Screen shape Flat
Aspect ratio 16:9
Motion interpolation technology PQI (Picture Quality Index) 1600
LED backlighting type Edge-LED
Screen format adjustments 4:3, 14:9, 16:9, Zoom
Supported graphics resolutions 3840 x 2160
Display diagonal (metric) 139 cm

TV tuner

Digital signal format system DVB-C,DVB-S2,DVB-T2

Smart TV

Smart TV
Internet TV
Operating system installed Web OS
Interactive TV
Smart modes Game, Movie, Photo, Sports, Standard, Vivid


Built-in speaker(s)
Number of speakers 2
RMS rated power 20 W
Audio decoders DTX,Dolby Digital
aptX audio decoding


Ethernet LAN
Wi-Fi Direct


Product colour White
VESA mounting
VESA mounting interfaces 300 x 300 mm


Teletext function
Teletext 2000 pages
Picture processing technology LG Triple XD Engine
Local dimming
24p support
Smartphone remote support

Ports & interfaces

HDMI ports quantity 3
PC in (D-Sub)
DVI port
Ethernet LAN (RJ-45) ports 1
USB 2.0 ports quantity 2
USB 3.0 (3.1 Gen 1) Type-A ports quantity 1
Component video (YPbPr/YCbCr) in 1
Composite video in 1
Headphone outputs 1
Common interface (CI)
Common interface Plus (CI+)
Digital audio optical out 1
SCART ports quantity 1
RF ports quantity 2
Common interface Plus (CI+) version 1.3
Intel® Wireless Display (Intel® WiDi)

Management features

Electronic Programme Guide (EPG)
ECO mode
On/Off timer


Energy efficiency class A+
Annual energy consumption 123 kWh
Power consumption (typical) 84 W
Power consumption (standby) 0.3 W


Digital Living Network Alliance (DLNA) certified


This is a manufacturer certified refurbished unit and is guaranteed to be GradeA+ condition.

TV's/Monitors: These units may have some very minor non-offensive cosmetic marks on the back of the unit but the screen and bezel will be in otherwise excellent condition. They come with retail boxes and include stand, power cord and standard remote control.

Laptops/Desktops: These units may have some very minor non-offensive marks but are overall in excellent condition.

Click on any of our customer review profiles below to see what previous customers have to say about their experience with Ex Demo Hut

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This unit is supplied with a full one year warranty

Delivery Information

Mainland UK:  We pay the delivery costs on all orders over £100 within mainland UK. Orders under £100.00 will incur a £7.95 delivery charge. Delivery within mainland UK is normally next working day from date of dispatch however larger or more fragile items may require special delivery arrangements and take slightly longer. We will contact you to arrange the most convenient delivery option in these cases. 

Republic of Ireland & Northern Ireland:  Flat rate delivery fee of £12.95 for regular parcel orders over £100 to anywhere in the Republic of Ireland or Northern Ireland. Larger or more fragile items may require special delivery arrangements and take slightly longer. We will contact you to arrange the most convenient delivery option in these cases. 

  Flat rate delivery fee of £16.95 for orders over £100. Larger or more fragile items may require special delivery arrangements and take slightly longer. We will contact you to arrange the most convenient delivery option in these cases.

Rest of Europe/America:  Please contact us for a quote.

Alternative Address Delivery
:  We can ship your order to an alternative address to the invoice / billing address (pending security check clearance).

Shipping Information
:  Subject to stocks and cleared funds, all orders will be dispatched within 24 hours, normally same day if ordered before 11.30a.m. 

Weekend / Bank Holidays
:  There are NO deliveries on Bank/Public Holidays. A Saturday delivery option is available on most orders but does incur an extra delivery charge, please contact us for details.