75TC3D

What the LG 75TC3D is and why its discontinued status matters

The LG 75TC3D is a 75-inch interactive digital board built on a UHD panel with a native resolution of 3,840 x 2,160. LG has discontinued this model, so buyers who already run one, or who are comparing it with newer boards, need clear specifications before deciding what to do next. SmartRooms Qatar supplies a current equivalent or a compatible replacement on request.

Writing, touch and screen sharing on the board

The touch layer uses projected-capacitive technology with a silver metal mesh and a 4T anti-glare protection glass. It recognises objects larger than 6 mm in diameter, has a stated accuracy of 2 mm and supports up to 40 touch points, so several people can annotate at the same time. Pen thickness changes with writing speed, which keeps handwriting natural during lessons and brainstorming sessions.

Participants can share laptop screens over a wired or wireless connection and save the annotations made on the board. The embedded app runs on the webOS platform, so basic writing and collaboration do not require a PC or extra software licences for the board itself.

Picture quality and display features

• Resolution: 3,840 x 2,160 (UHD), described by LG as four times the definition of Full HD
• Panel: IPS for wide viewing angles and consistent colour across the room
• Brightness: 500 cd/m² typical module brightness
• Layouts: PBP and PIP show two sources side by side or as an inset window
• Input switching: the display moves to a new input automatically when that input has higher priority

Where it fits in Qatar

A secondary school in Al Wakrah refitting a science laboratory could use the 75-inch screen as the main teaching surface, with teachers annotating diagrams directly during the lesson. In a boardroom in West Bay, three HDMI inputs, a DisplayPort and USB connections let staff connect laptops from several teams during one session, while PBP mode shows two sources at once. At a training centre in Education City, trainees can follow a presentation on one side of the screen and a spreadsheet or web page on the other.

What to plan before installation

The head measures 1,732.8 x 1,011.1 x 69.7 mm without the handle and weighs 74.5 kg, with a packed weight of 94 kg, so the board needs a rigid wall or a suitable mount. The VESA interface is 600 x 400 mm, and the LSW640A/B wall mount is listed as an optional accessory. A free site survey from SmartRooms Qatar helps confirm wall structure, access routes and power points before delivery.

Operating conditions are 0°C to 40°C with 10% to 80% humidity, so the room must be air-conditioned and kept within that range, which matters when summer temperatures in Qatar exceed 45°C. Typical power consumption is 240 W or less, falling to 170 W or less in Smart Energy Saving mode. Safety certifications include UL, cUL, CB, TUV and KC, and EMC certifications include FCC Class A, CE and KCC.

Software and comparing with a replacement

The board is listed with SuperSign Premium for content management and SuperSign Link for control and monitoring. LG also lists minimum computer requirements for its LG IDB Duo software, including Windows 7 or Windows 10, macOS 10.12 or 10.13, and 4GB of RAM. Check these against the laptops you use before deciding whether to keep this model or move to a replacement. Compare resolution, touch specifications and mounting dimensions with the current equivalent we quote.

Request a quote from SmartRooms Qatar for a current equivalent or a compatible replacement, and our team will check connectivity, mounting and software against your room. Quotations are usually issued within one working day, and we accept purchase orders (LPOs) and government tenders.