LG 75UM3C (Discontinued) · Replacements in Qatar

Name: LG 75UM3C 75-inch UHD Signage Display, 350 nits (Discontinued)
Brand: LG
SKU: lg-75um3c
Availability: Discontinued

Overview

The LG 75UM3C is a 75-inch Ultra HD signage display with 350 cd/m² typical brightness, built-in Wi-Fi and an OPS slot for third-party media players. The manufacturer has discontinued this model, so organisations that already run it and buyers comparing options should request a quote for a current equivalent or compatible replacement. It suits meeting rooms and reception areas in Doha.

What the LG 75UM3C is and who it suits

The LG 75UM3C is a 75-inch Ultra HD signage display from the UM3C series, made for organisations that need one large screen to show announcements, wayfinding, schedules or meeting content. Its 3,840 x 2,160 panel offers four times the pixel count of Full HD, and its typical brightness of 350 cd/m² suits indoor areas with controlled lighting. The manufacturer has discontinued this model, so this page is for organisations that already run it, buyers comparing options and anyone seeking a replacement. SmartRooms Qatar can quote a current equivalent or a compatible replacement.

Connectivity, playback and media player options

Inputs cover HDMI, DisplayPort, DVI-D, audio, USB 3.0 and an SD card slot, with DisplayPort and audio outputs. Picture-by-picture mode shows up to four inputs at once, and picture-in-picture adds a secondary window, which is useful for a lobby screen that shows a live feed beside a notice board. Content can be loaded onto a USB drive and scheduled without a media server. The internal 8GB memory holds pre-loaded content, and the webOS platform provides an app-based interface.

For more advanced playback, the OPS slot accepts a compatible OPS media player, and the display also works with the external MP500 and MP700 players. Built-in Wi-Fi (802.11n) supports content mirroring between devices on the same network, and a soft access point mode lets the display serve other digital devices. Optional accessories include an OPS kit (KT-OPSA), an HDBaseT unit (EB-B100) and a pixel sensor (KT-SP0).

Specifications to check before you order

Bezel: 15.8 mm when on, 14.9 mm when off
Dimensions: 1,682.37 x 960.3 x 57.9 mm without logo or handle
Weight: 41.5 kg for the head unit
Operating range: 0°C to 40°C, 10% to 80% humidity
Power: 100-240V~, 50/60Hz, built-in power supply; 160W typical, 115W in smart energy saving
Certifications: UL, cUL, CB, TUV, KC for safety; FCC Class A, CE, KCC for EMC
Control: RS232C, RJ45, IR receiver and pixel sensor

Where this model fits in Qatar

A private school in Al Wakrah updating its corridors could use a 75-inch panel for timetables, event notices and welcome messages, loaded and scheduled from USB. A consultancy in West Bay might install one in a boardroom, where the RS232C and RJ45 ports allow automated control from an AV control system. A clinic in Msheireb could place one in a waiting area to show health information.

Qatar summers regularly exceed 45°C, but this panel is rated for 0°C to 40°C operation. Keep it away from direct sunlight, window glare and unconditioned areas such as open terraces or loading bays. If you are unsure whether a location is suitable, confirm it with the SmartRooms Qatar team before the quotation is finalised.

Planning the installation

The head unit weighs 41.5 kg and measures 1,682.37 x 960.3 x 57.9 mm without its logo and handle, so the wall, bracket and access route need checking before delivery. SmartRooms Qatar offers a free site survey to confirm wall structure, the nearby power outlet and cable routing. The detachable logo allows the panel to be set in landscape or portrait orientation, which should be decided during planning. Government ministries and schools can issue a purchase order (LPO), and SmartRooms Qatar delivers to all eight municipalities of Qatar.

Because this model is discontinued, request a quote that compares it with a current equivalent or compatible replacement, so resolution, brightness and playback features match your site. Quotations are usually issued within one working day.

Highlights

75-inch Ultra HD panel at 3,840 x 2,160 resolution
350 cd/m² typical brightness for indoor signage
USB content playback and scheduling without a media server
PBP mode shows up to four inputs on one screen
OPS slot, built-in Wi-Fi (802.11n) and webOS platform
Discontinued by manufacturer; request a quote for a replacement

Estimated timeline

Quotation within 1 working day · delivery timing depends on stock availability, and we confirm it with your quotation.

Specifications

24 specifications · Source: manufacturer · checked Oct 2026

PANEL3

Screen Size: 75"
Resolution: 3,840 x 2,160 (UHD)
Brightness(Typ.,cd/m²): 350

CONNECTIVITY3

Input: HDMI, DP, DVI-D, Audio, USB 3.0, SD Card
Output: DP, Audio
External Control: RS232C, RJ45, IR Receiver, Pixel Sensor

PHYSICAL SPECIFICATION3

Bezel Width: On: 15.8mm, Off: 14.9mm
Monitor Dimension (W x H x D): 1,682.37 x 960.3 x 57.9mm (without logo / handle)
Weight (Head): 41.5kg

ENVIRONMENT CONDITIONS2

Operation Temperature: 0°C to 40°C
Operation Humidity: 10 % to 80 %

POWER2

Power Supply: 100-240V~, 50/60Hz
Power Type: Built-In Power

POWER CONSUMPTION2

Typ.: 160W
Smart Energy Saving: 115W

STANDARD(CERTIFICATION)3

Safety: UL / cUL / CB / TUV / KC
EMC: FCC Class "A" / CE / KCC
ErP / Energy Star: NA / No

MEDIA PLAYER COMPATIBILITY2

OPS Type Compatible: Yes
External Media Player Attatchable: Yes (MP500/MP700)

SOFTWARE COMPATIBILITY2

SuperSign-w lite: Yes
SuperSign-c: Yes

ACCESSORY2

Basic: Remote Controller (include 2ea batteries), Power Cord, QSG, DP Cable (1.8M), Regulation Book, Phone to RS232C Gender, Memory Cover
Optional: Pixel Sensor (KT-SP0), Media Player, OPS Kit (KT-OPSA), HDBaseT (EB-B100)

Downloads

5 files from the manufacturer

PDF Manuals & guides · Opens on manufacturer site English.pdf 9.5 MB PDF Manuals & guides · Opens on manufacturer site GSCS_MFL69504408_02_200205.pdf 7.4 MB PDF Manuals & guides · Opens on manufacturer site MFL69460201_06_IG_200320.pdf 4.0 MB URL Manuals & guides · Opens on manufacturer site Owner's Manual (global) URL Software & firmware · Opens on manufacturer site Software & Drivers (support page)

Questions about 75UM3C

Is the LG 75UM3C still available to order?

The manufacturer has discontinued the LG 75UM3C, so the best route is a quotation for a current equivalent or a compatible replacement. SmartRooms Qatar can match the replacement to your required screen size, resolution, brightness and playback features. Tell the team your location and number of units, and a quotation is usually issued within one working day.

Who is the LG 75UM3C suited to?

It suits organisations that need one large screen for announcements, schedules or meeting content, such as a school corridor, a clinic waiting area or a company reception in Doha. Its 75-inch UHD panel is readable from a comfortable distance for groups, and its 350 cd/m² typical brightness suits indoor spaces with controlled lighting. Existing owners and buyers comparing options should request a quote for a current replacement.

What resolution and brightness does it offer?

The panel has a 3,840 x 2,160 Ultra HD resolution and a typical brightness of 350 cd/m². The 75-inch screen shows fine detail at close viewing distances, such as a reception desk or a training room wall. Because brightness is a typical figure, check it against your room lighting when you request a quotation.

Can it play scheduled content from a USB drive without a server?

Yes. Content can be loaded onto a USB drive and scheduled on the display, so simple playlists do not need a media server. A facilities team in the Industrial Area could update safety notices on a USB stick and let the schedule run through the working day. The display also has 8GB of internal memory for pre-loaded content, which can play without an external input.

Can it show more than one source at the same time?

Yes. Picture-by-picture mode displays up to four inputs on one screen at once, and picture-in-picture adds a secondary window over the main image. A university reception in Education City could show a live feed beside an event schedule. Confirm the input combinations you need when requesting a quotation so the setup matches your sources.

Which media players and kits can it use?

The UM3C has an OPS slot compatible with OPS-type players, and it can also connect to the external MP500 or MP700 media players. Optional accessories include an OPS kit (KT-OPSA) for third-party OPS players or HDBaseT boxes, and an HDBaseT unit (EB-B100). An events company in Lusail can choose the player that fits its existing content system.

Does it integrate with a meeting room AV control system?

The manufacturer lists compatibility with AV control systems for automated control in meeting rooms. Control connections include RS232C, RJ45, an IR receiver and a pixel sensor, with the pixel sensor (KT-SP0) sold as an optional item. Confirm the control protocol and cabling with the SmartRooms Qatar team before the boardroom design is finalised.

Can I install it outdoors or in direct sunlight in Doha?

No. The operating temperature range is 0°C to 40°C with 10% to 80% humidity, so it is not suited to outdoor sites. Qatar summers can exceed 45°C, so avoid direct sunlight, window glare, open terraces and unconditioned loading bays. Confirm the exact location with the SmartRooms Qatar team before the quotation is finalised.

How heavy is it, and what should I plan for wall mounting?

The head unit weighs 41.5 kg, and the monitor measures 1,682.37 x 960.3 x 57.9 mm without logo or handle. Plan for a bracket rated for this weight, enough lifting staff and a clear access route for delivery. SmartRooms Qatar offers a free site survey to check wall structure, the power outlet and cable routing before installation.

Will it work with Qatar's 240 V power supply?

The built-in power supply is rated 100-240V~ at 50/60Hz, which covers Qatar's 240 V, 50 Hz mains. Typical consumption is 160W, falling to 115W in smart energy saving mode. Confirm that the supplied power cord suits the BS 1363 sockets common in Qatar before the panel is installed, and ask the team if you need guidance on the connection.

Can it be mounted in portrait orientation?

Yes. The logo is detachable, which allows the panel to be installed in landscape or portrait orientation. Portrait mounting suits a corridor wayfinding board or a school notice column, where a tall layout reads more naturally. Decide the orientation before the wall bracket is fixed, and confirm it during the site survey.

Can a government entity or school buy it through an LPO?

Yes. SmartRooms Qatar accepts purchase orders (LPOs) and government tenders, including Monaqasat, and accepts payment by bank transfer, cheque or purchase order. Because this model is discontinued, a school or ministry should request a quotation for a current equivalent so the LPO matches the replacement specification. Quotations are usually issued within one working day.