The Kelvin (Kevin) KN55UHD‑PRO motherboard serves as the powerhouse behind the 55″ 4K Ultra HD Smart LED TV. Based on a robust MediaTek-powered SoC architecture, it enables vibrant 3840×2160 resolution, a 60 Hz refresh rate, and supports advanced visual enhancements like HDR‑10 and Dolby Vision  The board runs Android‑based OS with 1 GB RAM and 8 GB storage, offering full smart-TV capabilities including pre‑installed apps, screen mirroring, and over-the-air updates It features dual HDMI and USB ports, built‑in Wi‑Fi, Ethernet, RF input, and audio out handling stereo sound with 30 W output. Internally, it interfaces via LVDS to the T‑Con and power boards, and connects to IR controls and panel components, making it a plug-and-play OEM replacement ideal for restoring full visual and smart functionality to the KN55UHD‑PRO series.

The Samsung UA32M5570AU motherboard is the main control board for the 32″ Full HD Smart LED TV, responsible for managing video processing, audio output, smart features, and all input/output functions. It supports 1920×1080 resolution, runs on Tizen OS, and includes 3 HDMI ports, 2 USB ports, built-in Wi-Fi, LAN, and optical audio out, ensuring seamless connectivity and smart functionality. This board is essential for the TV’s operation and is commonly replaced to fix issues like no display, port failure, or boot errors.

The Samsung UA40M5000AR motherboard is the central processing board that controls all major functions of the Samsung 40-inch Full HD LED TV. This board handles video decoding, audio amplification, signal input/output, and on-screen interface management. Designed for 1920×1080 resolution, it supports vibrant picture quality and smooth playback through Samsung’s proprietary video engine. It comes equipped with essential connectivity options including 2 HDMI ports, 1 USB port, AV input, RF antenna input, and optical digital audio out, enabling easy access to external devices such as set-top boxes, USB drives, and home theater systems. The board interfaces with the TV’s T-Con board, power supply, panel, and IR sensor, and stores the firmware that drives the TV’s operating system. It is commonly replaced in case of faults like no display, HDMI failure, or signal loss, and serves as a plug-and-play solution to restore full TV functionality.